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The relationship between color and vocabulary learning Graduation Thesis Presented to the Faculty of the Department of English Language and Literature Notre Dame Seishin University In Partial Fulfillment of the Requirement for the Degree Bachelor of Arts Natsumi Migaki 2016 i Contents Abstract Chapter One: Introduction 1.1 Introduction 1 1.2 Vocabulary learning 1.2.1 Forgetting curve 2 1.2.2 Depth of processing 3 1.3 The role of vocabulary learning 1.3.1 Sensory memory 4 1.3.2 Working memory 5 1.3.3 Long-term memory 7 1.3.4 Phonological loop 8 1.4 The effect of color on memory 1.4.1 Previous research 8 1.4.2 Color psychology 11 1.5 Research question 13 1.6 Summary 14 Chapter Two: The experiment 2.1 Introduction 15 2.2 The experiment 2.2.1 Introduction to the experiment ii 15 2.2.2 Aim 16 2.2.3 Method (1) Subjects 16 (2) Test design 16 (3) Procedure 18 2.3 Result 18 2.4 Summary 24 Chapter three: The results of the experiment 3.1 Introduction 26 3.2 Summary of the results 26 3.3 Discussion of the results 3.3.1 Discussion of the score from the data 27 3.3.2 Discussion of the score from the questionnaire 28 3.4 Answering research questions 29 3.5 Implication 30 3.5 Limitation of the experiment 30 3.7 Further research 31 3.8 Conclusion 31 Reference 33 Appendices 36 iii Abstract For speaking English, vocabulary learning is the first step. Color supports the role of memory because colors come into the eyes in an instant. This thesis discusses what the relationships between color and vocabulary learning are. In the first part of Chapter One, we described vocabulary learning, and kinds of memory. In the latter part, we looked at the previous research and various color psychology. In Chapter Two, we explained the process and the result of the experiment and questionnaire. To examine the differences between red versus blue, and between ink versus block, 38 Notre Dame Seishin University students were asked to take the experiment. They memorized 32 Dutch words using four different patterns, and then they answered the questionnaire. In addition, a week later, subjects took the second test. Then we compared the scores of the experiment. In Chapter Three, we discussed the results of the experiment and the questionnaire in detail. Also, the research questions were answered. The most important finding is that there are no huge differences between red and blue, and between ink and block. The reason is red enhances one’s visual effects. Blue enhances one’s concentration. By color psychology, each color has unique aspect to human mentality. This study proposed it is important to understand the characteristics of each color and to use colors properly. iv Chapter One: Introduction 1.1 Introduction Now, the world has become globalized. In modern society, people around the world speak English everywhere for communication each other, for business, or for trips. In addition, people are required to speak English as a minimum skill. Particularly, vocabulary learning is the first step for speaking English. There are a lot of the ways of learning vocabulary. For example, using flashcards, listening, writing it many times, connecting pictures and words, using gestures, making sentences and so on. One of these ways is using color. When people write down some important things, they use colored pens like red, blue, or highlighter. Everyone has underlined and marked the important points of the textbook. Sometimes, people have underlined too much so that they can make no sense of where is important. Moreover, people have a concrete image about the meanings of the colors (for example, red is seen as caution, passion or excitement, blue denotes calm, cool, green denotes harmony, peace yellow denotes joy, happiness and so on). We can thus assume that the colored information will tend to affect memory and this thesis will examine this assumption. Color supports the role of memory because colors come into the eyes in an instant. By showing the coloring words visually, we may be able to improve the vocabulary learning effect. 1 1.2 Vocabulary learning 1.2.1 Forgetting curve The forgetting curve shows how information is lost over time when there is no attempt to retain it. It is clearly shown in German psychologist Hermann Ebbinghaus's study in 1885. The graph shows that after 20 minutes we forget 42% of the items we learn, after 1 hour 56%, the next day 74%, the next week 77%, and the next month 79%. The result of this experiment clearly shows that (1) memory forgets nearly half of the information almost immediately and (2) but the retained memories are forgotten more slowly and remain for a prolonged period of time slowly decaying. In addition, research has found that re-learning is much faster than initial learning. Figure 1: Ebbinghaus’s Forgetting Curve 2 1.2.2 Depth of processing Psychologists Craik and Lockhart (1972) proposed the levels of processing model of memory. They showed deep processing produces longer lasting, and stronger memory traces than shallow processing. Shallow processing is input and receptive. For example, it might include repeating or writing out words. We can learn quickly but forgetting is also quick. Deep processing can also involve output and productive use of the knowledge. For example, it might include making original sentences or trying to use the words in conversation. Studying in different ways shows learning is deeper because you connect knowledge to all your senses. Different sensory organs, five senses—sight, hearing, smell, taste, and touch involve different depths of processing by nature, generally producing higher recall value in certain senses than others. Visual input creates the strongest recall value of all senses, and also allows the widest spectrum of levels-of-processing modifiers. Shallow processing emphasizes the physical structuere of the stimulus Structual encoding Intermediate processing Phonemic encoding emphasizes what a word sounds like Deep processing Semantic encoding emphasizes the meaning of verbal input Figure 2: Stage of memory 3 1.3 The role of memory in vocabulary learning Richard Atkinson and Richard Shiffrin (1968) proposed a theory of human memory. They used ‘The Atkinson-Shiffrin model’ to show that the human memory could be broken down into three different memory stores, sensory memory, working memory, and long-term memory. 1.3.1 sensory memory Sensory memory is very short-term memory. Sensory memory cannot be controlled and lasts only a few seconds at most. Sensory memory is often confused with working memory but there is a significant difference. Sensory memory is the initial level of your memory. Humans have five main senses: sight, hearing, taste, smell, touch, plus others such as balance, time, pain,. Before the information comes in your brain, any memory will go through the processing center. The two most studied types of sensory memory are iconic memory (visual) and echoic memory (sound). George Sperling proposed iconic memory in the 1960s, and it stores information for 200-500 milliseconds, that is, less than a second. Figure 3 summarizes the discussion of sensory memory in this section. 4 Figure 3: the way of sensory memory 1.3.2 Working memory Working memory has ability to process a lot of information at the same time. It is said that it is “the brain’s Post- it note”. Miller (1956) said that the only a small amount of information (7±2 words or chunks) stays in working memory for about 15-30 seconds. For example, when people are given a phone number and are forced to memorize it because there is no way 5 to write it down. The majority of people will find it difficult to remember more than a handful of digits for any length of time unless the number was repeated in their mind over and over again. So, working memory holds a small amount of information for a short time. Short-term memory decays rapidly and usually disappears from a person's mind within 30 seconds. In this 30 seconds, people select rehearsal and encoding or forget. Rehearsal means that people repeat the information again and again in their head. The more time people repeat the information, the more likely it is the information will be sent to long-term memory. In addition, working memory is influenced by the ‘serial position effect’. Murdock (1962) conducted the experiment in which participants learned a list of words that varied in number from 10 to 40 words and freely recalled them. Each word was presented for one to two seconds. They tend to remember the first few and last few words and are more likely to forget those in the middle of the list. This is called the ‘bath-tub effect”. The improved recall of words at the beginning of the list is called ‘the primary effect’ and that at the end of the list is called ‘the recency effect’. Murdock suggested that words early in the list were put into long-term memory (primacy effect) because the person has time to rehearse each word again and again. Words from the end of the list were put into working memory (recency effect) that can typically hold about 7±2 items in memory. 6 1.3.3 Long-term memory Long-term memory has a permanent large capacity. In order not to forget new information, we need to connect memories in long-term memory. They divide into two parts, declarative memory and procedural memory. Declarative memory is memory of verbal information and can explain this information. In addition, declarative memory can be divided into semantic memory and episodic memory. Semantic memory includes general facts and details like names or words and episodic memory has episode that express own experiences or past memories. Also, procedural memory has unconscious action or thinking that have nothing to do with verbal information. Figure 4: Mastin’s table of memory types 1.3.4 Phonological loop 7 Baddeley (1974) follows the model of Atkinson and Shiffrin but he divides working memory into three systems, the phonological loop, the visuo-spatial sketchpad, and the central executive. Phonological loop retains verbal information as phonetic code for a short time. Stated quite simply, we recall the voice or sounds that someone said just by listening in the brain. For example, when a teacher said, “Repeat after me,” first students just listen and then students recall and copy the teacher’s voice. Figure 5: Schematic of Baddeley's Model 1.4 The effects of color on memory 1.4.1 Previous research Color has as a supporting role of memory, and has a major impact on cognition and behavior, so that many researchers are interested in color. For 8 example, Soldat et al. (1997) showed color had an effect on test performance. And, Verhoeven et al. (2006) proposed color had effects on the well being of hospital patients. In addition, Babin et al. (2003) researched color had effect on product evaluation and purchase intention. While these studies show good results, some studies lead to conflicting and inconsistent results. For example, they are divided on whether warm (e.g. red) versus cool color (e.g. blue) enhance cognitive task performance. While Elliot et al. (2007) and Soldat et al. (1997) have showed that cool colors led to better performance than warm colors, while Hatta et al. (2002), Kwallek and Lewis (1990) have found the opposite. In the major result from resent studies, Mehta and Zhu (2009) has explained that warm colors (e.g. red) led to better performance than cool colors (e.g. blue). First, they suggested that different colors could activate types of regulatory focus, and affect performances on different types of cognitive tasks. Higgins (1987) suggested regulatory focus theory that people could achieve their goals in two different ways, with a promotion or a prevention regulatory focus. People who have a promotion focus think of their goals as hopes and aspiration, and approach them hard. On the other hand, people who have a prevention focus think of their goals as duties and obligations, and avoid mistakes carefully. Also, Elliot et al. (2007) conducted that people develop shared associations with colors. For example, while red is often associated with 9 danger and mistakes, blue is often associated with openness and freedom. Red is likely to activate a prevention focus because it has something to do with danger and mistakes. Blue is likely to activate a promotion focus because it has something to do with openness and freedom. In addition, Fridman and Forster et al. (2003) examined that a promotion focus increases performance speed and creativity, a prevention focus increases performance accuracy. Then, they assumed that while red leads to a prevention focus and then better performance on detailed-oriented tasks, blue leads to a promotion focus and thus better performance on creative tasks. In this study, researchers at the University of British Columbia conducted experiments with 600 participants to see how cognitive performance varies when people see red or blue. Participants performed tasks in which words or images were displayed against red, blue or neutral backgrounds on computer screens. Based on their experiments and analysis, they realized that red groups did better on tests of recall and attention to detail, like remembering words or checking spelling and punctuation, however blue groups did better on tests requiring invention and imagination, like creative uses for a brick or creating toys from collections of shapes. They suggested that while red leads to better performance on detailed-oriented tasks, blue leads to better performance on creative tasks. 1.4.2 Color psychology 10 Our lives are surrounded by color; color affects the human mind more than we might think. We induce colors unconsciously, conversely speaking; it is possible to induce memories if we know how color influences people’s minds. Color has a psychological impact, a physiological impact, an emotional impact, and a cultural impact. According to the psychological impact, your memorization force, your reminiscence force, and your cognition increase. Also, you can easily understand when learning with color. Next, according to the physiological impact, it affects the nerves. The research suggests red will increase the blood pressure because it gives a stimulus to the sympathetic nervous system. Conversely speaking, blue or green are said to relax us. So, our emotions and moods are greatly influenced by color. For example, a person becomes cheerful if they look at yellow. If you look at green such as a houseplant, people may feel relieved. Last, culture provides basic values and feelings so that colors have different impressions on people according to their culture. For example, in Western culture black is a symbol of death but in the Eastern culture white is. The following are some common psychological effects of colors Red; love, romance, gentle, warmth, comfort, energy, excitement, intensity, life, blood, Pink; romance, love, gentle, calming, agitation Orange; happy, energetic, excitement, 11 enthusiasm, warmth, wealth prosperity, sophistication, change, stimulation Yellow; happiness, laughter, cheery, optimism, hunger, frustration, anger, attention-getting Green; natural, growth, health, envy, tranquility, harmony, calmness, fertility Blue; calmness, serenity, cold, uncaring, wisdom, loyalty, truth, focused, un-appetizing Purple; royalty, wealth, sophistication, wisdom, exotic, spiritual, prosperity, respect, mystery Brown; reliability, stability, friendship, sadness, warmth, comfort, security, natural, organic Gray; neutral, timeless, practical Black; authority, power, strength, evil, intelligence, thinning / slimming, death or mourning White; purity, innocence, cleanliness, sense of space, neutrality, mourning (in some cultures/societies) Red is said to be very attractive in colors. Red is likely to be attracted people and also to be stored in their memory. If you want to attract people or want to remember things, it is effective that you use red. Then, red has a long wavelength of light so that red is easy to reach people’s eyes in most colors. For example, the signal has three colors; red, yellow, and blue. 12 And red has the meaning of “STOP” because red attracts people’s interest and direct people’s attention towards. Red is often used things that is shown such as “stop, ban, or danger” because it must catch people’s attention. In the other hands, blue gives relax to people so it is said that suppress the blood pressure. Then, blue gives concentration so that people feel slow the time. The effect that people feel slow time is, in a sense, people fool themselves and people lead into a kind of “zone”, therefore people keep the high concentration and they can study long time. Colors can greatly affect the human mind and feelings, because they give psychological and physiological effects. Then, we have been controlled in colors unconsciously. 1.5 Research questions From the study above, we have learned about vocabulary learning and color psychology. We will examine these three questions below. (a) What color is useful for vocabulary learning? (b) Is there a difference between presenting words in red or blue? (c) Is there a difference between presenting words in colored type or with a block-colored background? 1.6 Summary 13 In this chapter, we learn how memory works when we memorize something. Also, we learn the impact and effects of color from previous research. According to previous research, it seems red leads is to better memorize vocabulary. We will discuss the three research questions and results of the experiment in Chapter Two. 14 Chapter Two: The experiment 2.1 Introduction In Chapter One, we could learn about vocabulary learning and color psychology. In this chapter, we will find out what the relationships are there between color and vocabulary learning, the difference between presenting words in red and blue, and the difference between presenting words in colored type or with a block-colored background. 2.2 The experiment 2.2.1 Introduction to the experiment The experiment was designed to find out the difference between presenting words in red and blue, and the difference between presenting words in colored type or with a block-colored background through a test. We aimed to determine which color, red or blue, is better to memorize vocabulary according to the test scores and compared the first test score with the second test score. Also we planned to determine whether the words in colored type or with a block-colored background are better by comparing their test scores. 2.2.2 Aim 15 The aim is to examine whether there is a difference between presenting words in red or blue and also whether there is a difference between presenting words in colored type or with a block-colored background. Moreover, we will examine which color is better to study vocabulary. 2.2.3 Methods (1) Subjects 38 third or fourth grade subjects in Notre Dame Seishin University participated in this experiment. They major in English linguistics or literature. All of them were females. Seven people were 3rd university students and the rest of them are 4th students. They had studied English for more than eight years. (2) Test design The subjects memorized 8 Dutch words written in the booklet and answered the questions. For my research questions, the booklet was divide into four patterns, red words on a white background, blue words on a white background, white words on a red background, and white words on a blue background. Put example below and the whole of the test booklet are put in the Appendix. 16 Example of red words. ① 感じる voelen ② 着る dragen ③ 三角 driehoek ④ Example of blue words. ① 友達 vriend ② 重い zwaar ③ 地震 aardbeving ④ Example of red background ① 金曜日 vrijdag ② 絵を描く schilderen ③ 祈る bidden ④ Example of red background ① おいしい lekker ② 理科 wetenschap ③ 遊ぶ spelen ④ 17 In addition, subjects learned French or German when they were 1st grade. So, I choose Dutch because nobody had learned. However, Dutch and Germany are similar. On the classification of linguistics, Dutch is the one dialect of a broad German (Germanic German). So, I avoid the similar Dutch words and chose nouns, verbs, adjectives, and adverbs equally. 3) Procedure The test had 32 questions in total and each section had 8 questions. The students were asked to write their student number and their names on the test book. They memorized 8 Dutch words in 2 minutes for each section. When they answered questions, the students could not use their dictionaries and go back to the previous page. After they finished, all the test books were collected. The second test was about a week later. 2.3 Results First we will look at the data by the subjects for discussing whether there are some differences between red and blue and between ink and block. 18 Table 1: the data by subject RED Ink BLUE Block Ink Block 1st 2nd 1st 2nd 1st 2nd 1st 2nd Haruna 8 1 6 0 5 0 8 0 Mika 3 0 6 0 4 0 4 1 Yurina 5 0 6 1 4 1 6 0 Mina 6 2 7 3 8 3 8 0 Harukame 5 0 6 0 3 0 8 1 Mariko 8 1 8 2 6 2 8 0 Yuki 4 0 3 0 3 1 3 0 Yumiko 2 0 7 3 5 2 7 0 Yuri 7 1 8 0 7 3 6 2 Kokoro 8 2 5 0 0 0 7 1 Anna 7 1 5 0 6 0 3 0 Maya 7 1 2 0 6 0 8 0 Sakko 4 1 7 2 6 0 8 4 Ayako 5 1 7 2 4 0 6 2 Haruka 4 0 5 0 5 0 5 0 Hiroko 8 7 8 4 7 4 8 7 Yuki 7 2 5 0 5 1 6 0 Aya 7 4 6 2 7 4 8 2 Anna 6 1 8 0 8 1 8 2 Rui 8 0 8 0 8 0 8 1 Mari 8 2 8 0 8 2 7 1 Natsumi 7 1 8 0 8 1 8 0 Yuki 8 5 7 3 7 6 8 5 Saki 8 2 8 2 8 3 8 2 Riko 8 2 6 1 5 1 8 0 Miho 7 3 6 3 8 5 8 4 Shiho 8 2 1 0 8 0 8 2 19 RED Ink BLUE Block Ink Block 1st 2nd 1st 2nd 1st 2nd 1st 2nd Saki 7 1 8 2 7 3 7 2 Yuka 8 0 8 5 8 0 6 1 Sakura 8 0 8 1 8 0 8 0 Saya 7 1 5 1 7 0 4 0 Saki 8 0 8 0 8 0 8 0 Tomoe 6 0 6 0 4 1 6 1 Yume 8 1 8 0 7 0 6 0 Yuna 8 1 8 1 8 1 8 1 Mina 2 0 5 1 4 0 7 2 Wako 8 3 8 1 8 4 7 6 Ayano 8 0 8 0 8 1 7 2 Average 6.61 1.29 6.50 1.05 6.21 1.32 6.89 1.37 Table 1 shows the scores of the experiment for all subjects and also the average score. The average score of the first experiment is 6.61 (red ink), 6.50 (red block), 6.21(blue ink), and 6.89 (blue block). Blue block has a little higher score, but it can’t be said that there is a huge difference between the four patterns. Then, the subjects were asked to rememorize and do the same experiment after a week. The average score of the second experiment was 1.29 (red ink), 1.05 (red block), 1.32 (blue ink), and 1.37 (blue block). As in the first experiment, the blue block has the highest score. These four patterns have almost the same score. 20 Table 2: the average data from Table 1 for the post-test and the delay data The average score Standard deviation (std) First test Second test First test Second test Red 6.55 1.17 1.41 1.22 Blue 6.55 1.34 1.42 1.54 Ink 6.41 1.3 1.62 1.47 Block 6.70 1.21 1.31 1.32 The standard deviation scores (std) seem to show that there is considerable individual variation between subjects. The research question asks about the difference between presenting words in red or blue and about the difference between presenting words in colored type or with a block-colored background. For the research question, we divided the experiment score into red and blue and into ink and block (Table 2). The score average of the first score about red and blue is the same (6.55). And the standard deviation scores from the first experiment is 1.41 (red) and 1.42 (blue). This shows that there is no difference between red and blue. The average score of the first score is 6.41 (ink) and 6.7 (block). And the standard deviation scores of first experiment is 1.62 (ink) and 1.31 (block). This shows that ink shows some difference in the result of the experiment for each subject. Therefore, block pattern helps raise the experiment score more than ink pattern. 21 In this experiment, 38 subjects were asked to memorize 32 unknown Dutch words in four ways: red ink, blue ink, red block, and blue block. In addition, we asked the subjects that which color was easier to remember after this experiment. And also, we asked to the subjects that what colors they like because the result of the experiment may change due to likes or dislikes. 10 9 9 8 7 7 6 5 4 3 6 5 3 3 3 2 2 2 2 2 1 0 Figure 6: what colors do you like? (Questionnaire) We allowed multiple answers to the subjects. We see from figure six that the nine subjects like pink, seven like blue, and six like white. Therefore, the differences of the results will not be observed by colors. 22 red 42% blue 58% Figure 7: Which do you like red ink or blue ink? (Questionnaire) We see from figure seven that the subjects like blue (58%) and red (42%). We asked the reason why they like the color. Most of the students who chose blue answered, “Because it is easy to read or because I can concentrate on the experiment.” On the other hand, the subjects chose red, “Because I felt I must remember the words or felt the important words.” And one negative reason for red is “Because red is irritating my eyes.” 23 red 21% blue 79% Figure 8: Which do you like red block or blue block? (Questionnaire) We see from figure eight that the subjects like blue (79%) and red (21%). We asked the reason why they like the color. Most of the students who chose blue answered, “Because it is easy to read, increased concentration or I felt relax.” On the other hand, the subjects chose red, “Because it increased motivation.” And some negative reason for red was “Because my eyes got tired.” 2.4 Summary In this chapter, we conducted an experiment and reported the results. In the experiment, 38 subjects were asked to memorize Dutch words. The delay test was conducted about a week later. The result of our experiment clearly shows that the average score of the first experiment is 24 6.61 (red ink), 6.50 (blue ink), 6.21 (red block), and 6.89 (blue block). It is said that there is almost same scores between four patterns. The reasons for these data, the result and others will be analyzed in the next chapter. 25 Chapter Three: The results of the experiment 3.1 Introduction In Chapter One, we studied vocabulary learning and color psychology. In Chapter Two, we considered whether there are differences of the experiment score depending on red or blue, whether there are differences between presenting words in colored type or with a block-colored background, by asking NDSU 38 students to take experiments. In this chapter, we would like to analyze the results of the experiment and discuss the data in detail. In conclusion, we will show the answers to the three research questions. 3.2 Summary of the results In Chapter Two, we looked at the results of the experiment. All the subjects took tests two times by four colors pattern. The average score of the first experiment is 6.61 (red ink), 6.50 (blue ink), 6.21 (red block), and 6.89 (blue block). It can’t be said that there is a huge difference between four patterns. Then, after a week, subjects were asked to do the same experiment. The average score of the second experiment is 1.29 (red ink), 1.05 (blue ink), 1.32 (red block), and 1.37 (blue block). These four patterns are almost the same score. 26 The average score of first score about red and blue is the same (6.55). And the standard deviation scores of first experiment is 1.41 (red) and 1.42 (blue). Then, the average score of first score is 6.41 (ink) and 6.7 (block). And the standard deviation scores of first experiment is 1.62 (ink) and 1.31 (block). 3.3 Discussion of the results In this section, we will discuss the results of the experiment in detail. 3.3.1 Discussion of the score from data First, we will discuss about red versus blue. The average score of first experiment about red and blue is the same (6.55). And the standard deviation scores of first experiment are 1.41 (red) and 1.42 (blue). Then, the average score of the second test about red and blue is 1.17 (red) and 1.34 (blue). And the standard deviation scores of the second test were 1.22 (red) and 1.54 (blue). There was no huge difference between red and blue. That is reason subjects are affected by color psychology of each color. According to color psychology, red is said to be a very attractive color. Red has a deep relationship to the vision among the five senses. Red help us develop a memory remaining in our mind because red comes into their view. On the other hand, blue relaxes people so it is said that it lowers the blood pressure. So, blue helps concentration. In short, red enhances one’s visual effects. Blue 27 enhances one’s concentration. For that reason, someone has had influence by red and someone has had influence by blue. Therefore, the experiment score is almost equal. Next, we will discuss ink versus block. The average score of first experiment is 6.41 (ink) and 6.7 (block). And the standard deviation scores of first experiment are 1.62 (ink) and 1.31 (block). Then, the average score of the second test was 1.3 (ink) and 1.21 (block). And the standard deviation scores of the second test were 1.47 (ink) and 1.32 (block). There are also no huge deference between ink and block. In terms of red, the average score of the first experiment is 6.61 (red ink) and 6.50 (red block). On red block, red area is large but red makes our eyes tired and are irritated from a psychological aspect. Therefore, red block isn’t suitable for study. However, some subjects said in the questionnaire that blue block is easy on the eyes. As a result, the average score of the first experiment is 6.21(blue ink), and 6.89 (blue block). Therefore, in terms of blue, block is more suitable for study than ink. 3.3.2 Discussion of the score from questionnaire We see from questionnaire that the subjects like blue ink (58%) and red ink (42%), in addition, blue block (79%) and red block (21%). On both of questionnaire, many subjects answered blue. Color psychology shows blue can relax. As the evidence, many subjects said that they could felt relax and 28 could concentrate on test. On the other hand, some subjects said red felt important words but some subjects said negative answer that red is irritating and their eyes got tired. All you have to study is to concentrate. Therefore, we see from questionnaire that blue is better for learning than red. 3.4 Answering the Research Questions We will examine these three questions in the first chapter. The research questions for this thesis are: (a) What color is useful for vocabulary learning? (b) Is there a difference between presenting words in red or blue? (c) Is there a difference between presenting words in colored type or with a block-colored background? Then, in this section, we will answer these three research questions one by one. First, about (a) it is said by color psychology that red is an attractive color, and blue raises the concentration. Each color has unique aspect for human mentality. Therefore, it is important to understand the characteristics of each color and to use colors properly. Next, about (b) there are no huge differences between red and blue. The experiment shows that red enhances human’s visual effect so that the memory efficiency is enhanced. Then, blue enhances human’s concentration so that the memory 29 efficiency is enhanced. Last, about (c) there are also no huge differences between ink and block but there is something to do with colors. Red block is not suitable for the learner because red irritates them. It’s not good for study. However, blue can help us relax so that blue block is better for study than red block. 3.5 Implications Red is likely to be attractive people and also helps words to be stored in their memory. On the other hand, blue relaxes us and helps concentration so that people feel the time slows. Blue is intense for human’s study. Therefore, we will use black when you write the insignificant things and blue for the important things. In addition, if there is something more important than blue, then we will use red. We will sustain concentration by blue and then we will become excited by red so that the important things became established more memory. 3.6 Limitations of the experiments There are some limitations of the experiment. First, for example, it is said that the study by Mehta and Zhu (2009) did not involve different 30 cultures, like China, where red symbolizes prosperity and luck. In addition, in Japan the sun is often written in red, but in western countries it is often written in yellow. So, the results might change if the subjects had some different culture. Another limitation is that we understand the results of only young females. Last, this time we use red and blue for the experiment. Therefore, we discussed about only red and blue. That is, we don’t know about another color. For example, yellow is one of the three primary colors and use the traffic light for meaning of caution. 3.7 Further research To follow up this research, there are some ideas. Firstly, our subjects are only female. However, it is said that male brain and female brain have some differences. If we asked for male and female, the results of the experiment would change. Secondly, we use only two colors, red and blue, for the experiment. The three primary colors are red, blue, and yellow. If we used another color, there would be a huge difference. 3.8 Conclusion The purpose of this thesis is to find out the relationships between 31 colors and vocabulary learning. Previous research suggested that while red leads to better performance on detailed-oriented tasks, blue leads to better performance on creative tasks. From the experiment, it can be said that there are no huge differences between red and blue, and between ink and block. For this reason, red enhances one’s visual effects. Blue enhance one’s concentration. So, some are influenced by red and someone by blue. Therefore, the experiment score is almost equal. It is difficult to say the best memorizing color method but it can be said that there is something effect of colors and vocabulary learning. Each color has unique aspect to human mentality. Therefore, it is important to understand the characteristics of each color and to use colors properly. 32 References Art Therapy, Color Psychology: The Emotional Effects of Colors. http://www.arttherapyblog.com/online/color-psychology-psychologica-effectsof-colors/#.VkrzrbSQtmA, (Accessed October 11, 2015) Memorize, Sensory Memory Is Your Brain Hub. https://memorise.org/brain-articles/sensory-memory-brain-hub, (Accessed November 10, 2015) Ravi Mehta and Rui (Juliet) Zhu, Blue or Red? Exploring the Effect of Color on Cognitive Task Performances http://www.uvm.edu/~pdodds/files/papers/others/2009/mehta2009a.pdf, (Accessed November 17, 2015) Simply Psychology, Working Memory. http://www.simplypsychology.org/working%20memory.html, (Accessed November 10, 2015) Simply Psychology, Levels of Processing. http://www.simplypsychology.org/levelsofprocessing.html, (Accessed May 10, 2015) 33 The Human Memory, Sensory Memory. http://www.human-memory.net/types_sensory.html, (Accessed November 10, 2015) The Human Memory, Short-term (working) Memory. http://www.human-memory.net/types_short.html, (Accessed November 10, 2015) The Human Memory, Long-term Memory. http://www.human-memory.net/types_long.html, (Accessed November 10, 2015) The New York Times, Colors may affect performance, study suggests. http://www.nytimes.com/2009/02/06/health/06iht-color.1.19983382.html, (Accessed November 17, 2015) The Team W Blog, Red Or Blue?: Research On Screen Color That May Surprise You http://www.blog.theteamw.com/2013/07/17/red-or-blue-research-on-screen-co lor-that-may-surprise-you/, (Accessed September 28, 2015) 34 Training Industry, Forgetting Curve. https://www.trainingindustry.com/wiki/entries/forgetting-curve.aspx, (Accessed November 16, 2015) 35 Appendices Example first test Please learn these Dutch words. ① 秋 de herfst ② デザート nagerecht ③ 上に boven ④ 愛する houden ⑤ 書く schrijven ⑥ 閉める sluiten ⑦ 偽る liegen ⑧ 可笑しい grappig 1 Don’t look back and please write the Japanese meaning. ① liegen ( ) ② boven ( ) ③ de herfst ( ) ④ houden ( ) ⑤ grappig ( ) ⑥ nagerecht ( ) ⑦ schrijven ( ) ⑧ sluiten ( ) 3. 2 Please learn these Dutch words. ① 金曜日 vrijdag ② 絵を描く schilderen ③ 祈る bidden ④ 乾いた droog ⑤ 科学 scheikunde ⑥ 小さい klein ⑦ 使う gebruiken ⑧ 売る verkopen 4. 3 Don’t look back and please write the Japanese meaning. ① bidden ( ) ② scheikunde ( ) ③ droog ( ) ④ vrijdag ( ) ⑤ schilderen ( ) ⑥ klein ( ) ⑦ verkopen ( ) ⑧ gebruiken ( ) 5. 4 Please learn these Dutch words. ① おいしい lekker ② 理科 wetenschap ③ 遊ぶ spelen ④ きれいな schoon ⑤ 建物 bouw ⑥ 浮く drijven ⑦ 得点 doelpunt ⑧ 失う verliezen 6. 5 Don’t look back and please write the Japanese meaning. ① bouw ( ) ② lekker ( ) ③ schoon ( ) ④ drijven ( ) ⑤ verliezen ( ) ⑥ doelpunt ( ) ⑦ spelen ( ) ⑧ wetenschap ( ) 7. 6 Please learn these Dutch words. ① 感じる voelen ② 着る dragen ③ 三角 driehoek ④ 最高の prima ⑤ 友達 vriend ⑥ 重い zwaar ⑦ 地震 aardbeving ⑧ 少ない weinig 8. 7 Don’t look back and please write the Japanese meaning. ① zwaar ( ) ② dragen ( ) ③ prima ( ) ④ vriend ( ) ⑤ aardbeving ( ) ⑥ weinig ( ) ⑦ voelen ( ) ⑧ driehoek ( ) 9. 8 It is end of the test. Thank you for cooperating with this test. Please answer these question. Q1 What colors do you like? ( ) Q2 Which do you like RED letters or BLUE letters? ( RED / BLUE ) Q3 And why? ( ) Q4 Which do you like RED background or BLUE background? ( RED / BLUE ) Q5 And why? ( ) 10. 9 Example second test Please write the Japanese meaning. ① schrijven ( ) ② nagerecht ( ) ③ grappig ( ) ④ sluiten ( ) ⑤ boven ( ) ⑥ houden ( ) ⑦ liegen ( ) ⑧ de herfst ( ) 10 Please write the Japanese meaning. ① droog ( ) ② klein ( ) ③ gebruiken ( ) ④ verkopen ( ) ⑤ schilderen ( ) ⑥ scheikunde ( ) ⑦ bidden ( ) ⑧ vrijdag ( ) 2. 11 Please write the Japanese meaning. ① drijven ( ) ② spelen ( ) ③ lekker ( ) ④ bouw ( ) ⑤ schoon ( ) ⑥ verliezen ( ) ⑦ wetenschap ( ) ⑧ doelpunt ) ( 3. 12 Please write the Japanese meaning. ① driehoek ( ) ② zwaar ( ) ③ dragen ( ) ④ voelen ( ) ⑤ vriend ( ) ⑥ aardbeving ( ) ⑦ weinig ( ) ⑧ prima ( ) 4. 13