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Processing Events and Learning Relational Terms: Figures are More Prominent than Grounds Tilbe Göksun Kathy Hirsh-Pasek Sarah Roseberry Temple University Roberta Michnick Golinkoff University of Delaware XVIth International Conference on Infant Studies – Vancouver, 2008 To process events and learn relational terms (e.g., verbs and prepositions), infants must: Parse the events into components Perceive and categorize these components Abstract them in the dynamic events Package and lexicalize the components according to their native language Gentner, 1982; Gentner & Boroditsky, 2001; Golinkoff et al.,2002; Hirsh-Pasek & Golinkoff, 2006 2 Jackendoff, 1983; Langacker, 1987; Lakoff, 1987; Mandler, 1996; 2004 Talmy, 1985; 2000 3 These semantic components are … Perceptually accessible Mandler, 1996; 2004 Universally codified in languages Jackendoff, 1983; Langacker, 1987; Talmy, 1985 But also encoded differentially in languages e.g. Path-Manner – English - Manner encoded in verb; path encoded in preposition (e.g., climb up). – Spanish, Turkish, Greek - Path encoded in verb; manner encoded in adverb (optionally) (e.g., in Turkish: tirmanarak cikti “going up climbingly”). Conceptual primitives Jackendoff, 1983; Lakoff, 1985; Mandler, 2004 4 Path - Manner Discrimination of Path-Manner – 7-month-olds discriminate path and manner in animated scenes Pulverman et al., 2003; 2004 – 10-month-olds discriminate path and manner Naturalistic scenes and human agents Casasola, Hohenstein, & Naigles, 2003 5 Path - Manner Categorization of Path-Manner – 11-month-olds categorize path over different manners (e.g., jump over, twist over, flap over) Pruden et al., 2003; 2005 – 13-months-olds categorize manner over different paths (e.g., jump over, jump under, jump behind) Pruden et al., 2003; 2005 – 10-12-month-olds categorize manner across changes in actors and paths in realistic stimuli Song et al., 2006 6 Path - Manner When infants start learning language: – Pay attention to language-specific aspects • 14- to 17-month-old English-reared infants having higher vocabularies are more sensitive to manner • Spanish-reared infants at the same age who have lower vocabularies are more sensitive to manner Pulverman et al., 2003 English, Japanese, and Spanish speaking toddlers: – extend the novel verb to label path – by preschool age, children display language specific preference Maguire et al., in progress 7 So … • • • • Infants parse the semantic components of actions Categorize the components Developmental progression: find certain constructs easier than others Be sensitive to their native language’s encoding with exposure 8 Figure is the moving entity performing the action Ground is the stationary setting where the action occurs e.g., The girl climbs up the mountain 9 Figure - Ground Universally codified in languages Jackendoff, 1983; Langacker, 1987; Talmy, 1985 Language specific encoding Ground encoding – English • “Go into” refers to a path that the figure moves along and the ground object as some kind of enclosure – Japanese: ground path verbs ---- ground is incorporated into the verb • wataru ‘go across’ – A barrier between a starting point and an endpoint – The ground should be a flat extended surface • The man go across the road/bridge, but not mountain, tennis court or grass. Muehleisen & Imai, 1997; Tsujimura, 1996 10 Present Study Do pre-linguistic infants discriminate figures and grounds in non-linguistic dynamic events? Is there primacy for figure or ground in processing these events? Are English-reared infants sensitive to the ground distinctions/comparisons encoded by Japanese verbs (e.g., wataru)? 11 Method Participants Study 1: Figure Discrimination 7-9 month-olds (N= 24, M= 7.89 mo) 10-12 month-olds (N= 14, M= 11.18 mo) Study 2: Ground Discrimination 7-9 month-olds (N= 23, M= 8.15 mo) 10-12 month-olds (N= 14, M= 10.79 mo) 12 Method Preferential Looking Paradigm Nonlinguistic dynamic events DV: Looking Time Example 13 Method 14 Study 1: Figure Discrimination Familiarization Test 15 Specific Predictions No preference to either side at salience Age differences Preference to novel figure at Test Condition differences • Adult-Adult, Child-Child, and Adult-Child • Figures on different grounds 16 Results 17 Specific Predictions No preference to either side at salience Age differences YES Preference to novel figure at Test • NO: At 7-9 months YES: At 10-12 months Condition differences – NO, but adult-child conditions – NO difference for conditions having different grounds 18 Study 2: Ground Discrimination Example 1: In Category Familiarization Test 19 Study 2: Ground Discrimination Example 2: Out Category Familiarization Test 20 Specific Predictions No preference to either side at salience Age differences Preference to novel ground at Test Condition differences – Differences in ground categories 21 Results 22 Results 23 Results e.g., railroad - road e.g., railroad – tennis court 24 Specific Predictions No preference to either side at salience Age differences YES Preference to novel ground at Test • NO: At 7-9 and 10-12 months YES: Only at 13-15 months Condition differences Differences in ground categories YES: Differentiated grounds depending on ground-path verb categories (13-15 months) 25 Do infants differentiate perceptually salient grounds? Out category In category 26 Control experiment Black & White Screen 27 Together … Infants discriminate figures and grounds in nonlinguistic dynamic events by 12 to 15 months of age, respectively Figures are distinguished earlier than grounds When English-reared infants start discriminating grounds in nonlinguistic dynamic events, they pay attention to differences not typically codified in their language 28 Discussion Discrimination of grounds – Categorical distinctions in Japanese – Infants start with paying attention to narrow differences Parallels to phonological development Discrimination of figures – moving entity – Infants pay attention to motion Findings are parallel to other semantic components in the literature – Differential attention to some aspects of events over others (path before manner, figure before ground) 29 Future Studies Older child age groups and adults Parallel studies with Japanese-reared infants Context vs. ground Bornstein et al. (2007) Comparison of grounds with a different action “walking alongside the road” Categorization Do infants categorize grounds depending on their category relation? 30