Researcher:
Özder, Levent Emir

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Undergraduate Student

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Levent Emir

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Özder

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Özder, Levent Emir

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20222

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    Timing relationships between representational gestures and speech: a corpus based investigation
    (The Cognitive Science Society, 2022) Donnellan, Ed; Man, Hillarie; Grzyb, Beata; Gu, Yan; Vigliocco, Gabriella; Department of Economics; Özder, Levent Emir; Undergraduate Student; Department of Economics; College of Administrative Sciences and Economics; N/A
    Theories suggest that representational gestures depicting properties of referents in accompanying speech could facilitate language production and comprehension. In order to shed light on how gesture and speech are coordinated during production, we investigate whether representational gestures are time-locked to the onset of utterances (hence planned when full events are encoded) or Lexical Affiliates (LAs; words most closely aligned with the gesture meaning; hence planned when individual concepts are encoded) in a large corpus of naturalistic conversation (n = 1803 gestures from n = 24 speakers). Our data shows that representational gestures are more tightly tied to LA onsets than utterance onsets, which is consistent with theories of multimodal communication in which gestures aid conceptual packaging or retrieval of individual concepts rather than events. We also demonstrate that in naturalistic speech, representational gestures tend to precede their LAs by around 370ms, which means that they could plausibly allow for an addressee to predict upcoming words.
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    Gesture use in L1-Turkish and L2-English: evidence from emotional narrative retellings
    (Sage, 2022) Department of Psychology; Göksun, Tilbe; Özer, Demet; Özder, Levent Emir; Faculty Member; Department of Psychology; College of Social Sciences and Humanities; Graduate School of Social Sciences and Humanities; 47278; N/A; N/A
    Bilinguals tend to produce more co-speech hand gestures to compensate for reduced communicative proficiency when speaking in their L2. We here investigated L1-Turkish and L2-English speakers’ gesture use in an emotional context. We specifically asked whether and how (1) speakers gestured differently while retelling L1 versus L2 and positive versus negative narratives and (2) gesture production during retellings was associated with speakers’ later subjective emotional intensity ratings of those narratives. We asked 22 participants to read and then retell eight emotion-laden narratives (half positive, half negative; half Turkish, half English). We analysed gesture frequency during the entire retelling and during emotional speech only (i.e., gestures that co-occur with emotional phrases such as “happy”). Our results showed that participants produced more representational gestures in L2 than in L1; however, they used more representational gestures during emotional content in L1 than in L2. Participants also produced more co-emotional speech gestures when retelling negative than positive narratives, regardless of language, and more beat gestures co-occurring with emotional speech in negative narratives in L1. Furthermore, using more gestures when retelling a narrative was associated with increased emotional intensity ratings for narratives. Overall, these findings suggest that (1) bilinguals might use representational gestures to compensate for reduced linguistic proficiency in their L2, (2) speakers use more gestures to express negative emotional information, particularly during emotional speech, and (3) gesture production may enhance the encoding of emotional information, which subsequently leads to the intensification of emotion perception.