External motivators of self-touching behavior

Previous research has shown that nonverbal self-touching behaviors can be induced by external motivators such as videos and literary passages about insects. This study investigated whether the number of self-touching behaviors differed between presentation of what was assumed to be an anxiety-inducing stimulus (listening to the reading of a passage about leeches and answering questions) or a nonanxiety-inducing stimulus (a passage about canaries). It also investigated whether there was a difference in frequency of self-touching when subjects were passively listening to passages or actively answering questions. The difference in frequency of self-touching between men and women was also observed. Over-all, subjects did not perform significantly more self-touching gestures during the anxiety-inducing stimulus than during the nonanxiety-inducing, as previous research had indicated. Subjects did touch themselves significantly more, however, while answering questions than while listening to the passage. Over-all, men performed significantly more self-touching behaviors than women. And, women touched themselves significantly more during the active anxiety-inducing cell than in any other condition.     

Semantics of primate gestures: intentional meanings of orangutan gestures

Great ape gesture has become a research topic of intense interest, because its intentionality and flexibility suggest strong parallels to human communication. Yet the fundamental question of whether an animal species’ gestures carry specific meanings has hardly been addressed. We set out a systematic approach to studying intentional meaning in the gestural communication of non-humans and apply it to a sample of orangutan gestures. We propose that analysis of meaning should be limited to gestures for which (1) there is strong evidence for intentional production and (2) the recipient’s final reaction matches the presumed goal of the signaller, as determined independently. This produces a set of “successful” instances of gesture use, which we describe as having goal–outcome matches. In this study, 28 orangutans in three European zoos were observed for 9 months. We distinguished 64 gestures on structural grounds, 40 of which had frequent goal–outcome matches and could therefore be analysed for meaning. These 40 gestures were used predictably to achieve one of 6 social goals: to initiate an affiliative interaction (contact, grooming, or play), request objects, share objects, instigate co-locomotion, cause the partner to move back, or stop an action. Twenty-nine of these gestures were used consistently with a single meaning. We tested our analysis of gesture meaning by examining what gesturers did when the response to their gesture did not match the gesture’s meaning. Subsequent actions of the gesturer were consistent with our assignments of meaning to gestures. We suggest that, despite their contextual flexibility, orangutan gestures are made with the expectation of specific behavioural responses and thus have intentional meanings as well as functional consequences.     

Communicative gestures in aphasia

Gestural communications of 10 mild and moderate aphasics and five controls were examined in two conditions: Face-to-face informal dyadic conversation and restricted visual access between speaker and listener. Gestural production was significantly reduced with restriction of visual access, supporting the posited communicative function of the hand and arm gestures investigated in this study. No differences were found between aphasic and control subjects in the rate of gestural communication in the natural condition of face-to-face interaction. Moderate aphasics, however, were found to produce proportionally fewer of the complex semantic modifying and relational communicative gestures and more nonspecific, nonconsensually shared, unclear gestures. Gestural complexity was significantly negatively correlated with measures of linguistic impairment for the aphasics. The relationship between the frequency and complexity of communicative gestures and concurrent verbalizations was also examined. The findings of this study provide confirmation for the view that there is an identifiable class of gestures utilized by aphasics for communication, aphasics are impaired in their gestural communicative competence in natural conditions of communication, and the quality of aphasics' gestural communications parallels changes in their verbal communication patterns.     

Comprehension of symbolic gestures in aphasia

One-hundred-and-twenty-eight patients with unilateral hemispheric damage (53 aphasics, 26 nonaphasic left, and 49 right brain-damaged patients) and 25 normal controls were given a test of symbolic gesture comprehension and other tests of verbal comprehension and of reproduction of symbolic gestures. On the test of symbolic gesture interpretation aphasic patients performed significantly worse than any other group of brain-damaged patients. Within the aphasic patients the inability to understand the meaning of symbolic gestures was highly related to the number of semantic errors obtained at a verbal comprehension test. On the contrary, only a mild relationship was found between comprehension and reproduction of symbolic gestures. Some implications of these findings are discussed.     

The mnemonic effect of speech gestures: Pantomimic and non-pantomimic gestures compared

Abstract

A video-taped model presented subjects with sets of sentences to be free-recalled. under three presentation conditions: (1) accompanied by pantomimic gestures; (2) accompanied by non-pantomimic gestures; and (3) no gestures present. When the sentences formed a narrative, the gestures did not affect recall. When the sentences were unconnected, recall was higher for the gestured than for tbe non-gestured sentences. The pantomimic and non-pantomimic gestures showed about the same mnemonic effect. The subjects were given a second test, either recall-cued by the gestures, or else free recall of the gestured Sentences only. The pantomimic conditions were superior to the non-pantomimic conditions in both these tests. Possible explanations for the mnemonic effects of the gestures are discussed.     

The ‘circumstances’ of gestures: Proto-interrogatives and private gestures

The later Wittgenstein's emphasis on the social usage of language has been very influential in psychology, particularly in language acquisition research. This move toward a pragmatic position should also be applied to gestures in pre-linguistic children and to objects in the everyday contexts of use. The shared ‘forms of life’ presupposed by language involve pre-linguistic gestures and material ‘things’.Research on early communication has focused on proto-declarative and proto-imperative gestures. I extend this focus and propose further types of gestures: ‘proto-interrogatives’ - in which children “ask” for help or regulation from adults, and three types of ‘private gestures’ - ostensive, indexical and symbolic - in which children regulate their own behaviour. This diversity of gestures becomes apparent when objects are taken seriously. Wittgenstein's ‘language-games’ necessarily apply to games with objects and gestures as well: social meaning in all cases is emergent within the context of these ‘sign games’ and ‘circumstances.’     

Embodying gestures: The Social Orienting Model and the study of early gestures in autism

Autistic spectrum disorders impair the ability to interact socially. Detecting and understanding their onset is not only an empirical enterprise, but also a theoretical one, often linked to studies on intersubjectivity. Different theoretical perspectives have been elaborated in the past to account for the deficit. The main purpose of this paper is to reinforce and offer empirical grounding to a recent approach, termed Social Orienting Model, by presenting the main theoretical approaches to autism and contrasting them to this view, as well as considering its possible effect on empirical research, focusing on current literature analyzing gestures in children with autism.

Semantic processing of mathematical gestures

Objective

To examine whether or not university mathematics students semantically process gestures depicting mathematical functions (mathematical gestures) similarly to the way they process action gestures and sentences. Semantic processing was indexed by the N400 effect.

Results

The N400 effect elicited by words primed with mathematical gestures (e.g. “converging” and “decreasing”) was the same in amplitude, latency and topography as that elicited by words primed with action gestures (e.g. drive and lift), and that for terminal words of sentences.

Significance and conclusion

Findings provide a within-subject demonstration that the topographies of the gesture N400 effect for both action and mathematical words are indistinguishable from that of the standard language N400 effect. This suggests that mathematical function words are processed by the general language semantic system and do not appear to involve areas involved in other mathematical concepts (e.g. numerosity).     

Role theory and the female sex role

Women's sex-role perceptions and behavior were studied from the perspective of role theory, with an emphasis on examining the situational nature of female sex roles and the degree of consensus among women concerning female sex roles. The perceived appropriateness and expected outcome for sex-role characteristics and the actual enactment of masculine and feminine behaviors were examined for women in social and work situations. It was hypothesized that feminine behaviors prevail in social situations and masculine behaviors in work situations. This hypothesis was clearly supported for perceived appropriateness and actual behavior, but not for expected outcome. For this variable, the predicted pattern was found only in the social situation. It was also hypothesized that the degree of consensus across women is higher for feminine than for masculine characteristics, but this pattern was found only for perceived appropriateness and actual behavior in the social situation.This article is based on a dissertation submitted to the University of Florida in partial fulfillment of the requirements for a doctoral degree. Portions of this work were presented at the annual meeting of the American Psychological Association in September 1976. The author would like to express her appreciation to Lawrence J. Severy and Marvin E. Shaw for their advice throughout this study.     

The ontogenetic ritualization of bonobo gestures

Great apes communicate with gestures in flexible ways. Based on several lines of evidence, Tomasello and colleagues have posited that many of these gestures are learned via ontogenetic ritualization—a process of mutual anticipation in which particular social behaviors come to function as intentional communicative signals. Recently, Byrne and colleagues have argued that all great ape gestures are basically innate. In the current study, for the first time, we attempted to observe the process of ontogenetic ritualization as it unfolds over time. We focused on one communicative function between bonobo mothers and infants: initiation of “carries” for joint travel. We observed 1,173 carries in ten mother–infant dyads. These were initiated by nine different gesture types, with mothers and infants using many different gestures in ways that reflected their different roles in the carry interaction. There was also a fair amount of variability among the different dyads, including one idiosyncratic gesture used by one infant. This gestural variation could not be attributed to sampling effects alone. These findings suggest that ontogenetic ritualization plays an important role in the origin of at least some great ape gestures.     

Role perceptions: Variations by sex and roles

A Role Perception Scale utilizing a combined projective-objective methodology was developed to assess female and male perceptions of each of three single roles — work, marriage, and parent — and two combined roles — work-marriage and work-parent. Research participants were 134 college students, 88 females and 46 males. Factor analysis of the objective scale, the only part to be scored, resulted in two major orthogonal factors labeled role engagement and competition factors. Sex and role differences for each factor were analyzed using 2×5 split block analysis of variance design with repeated measures. On three out of the five single and combined roles women perceived more engagement than men. In general males perceived roles as more competitive. These sex differences and patterns identified in within-sex analyses across roles are discussed.Parts of this paper were presented at the American Psychological Association Convention, Washington, D.C., September 1976. Research was supported in part by the Dean's Development Fund, New York University, School of Education, Health, Nursing, and Arts Professions. Both authors are senior authors. The order of names is randomly determined. The authors wish to thank Philip Merrifield and Barbara Hummel-Rossi for their statistical assistance in data analysis.     

Thirty years of great ape gestures

Animal Cognition - We and our colleagues have been doing studies of great ape gestural communication for more than 30 years. Here we attempt to spell out what we have learned. Some aspects...     

The epistemic innocence of motivated delusions

Delusions are defined as irrational beliefs that compromise good functioning. However, in the empirical literature, delusions have been found to have some psychological benefits. One proposal is that some delusions defuse negative emotions and protect one from low self-esteem by allowing motivational influences on belief formation. In this paper I focus on delusions that have been construed as playing a defensive function (motivated delusions) and argue that some of their psychological benefits can convert into epistemic ones. Notwithstanding their epistemic costs, motivated delusions also have potential epistemic benefits for agents who have faced adversities, undergone physical or psychological trauma, or are subject to negative emotions and low self-esteem. To account for the epistemic status of motivated delusions, costly and beneficial at the same time, I introduce the notion of epistemic innocence. A delusion is epistemically innocent when adopting it delivers a significant epistemic benefit, and the benefit could not be attained if the delusion were not adopted. The analysis leads to a novel account of the status of delusions by inviting a reflection on the relationship between psychological and epistemic benefits.     

Spontaneous gestures influence strategy choices in problem solving

Do gestures merely reflect problem-solving processes, or do they play a functional role in problem solving? We hypothesized that gestures highlight and structure perceptual-motor information, and thereby make such information more likely to be used in problem solving. Participants in two experiments solved problems requiring the prediction of gear movement, either with gesture allowed or with gesture prohibited. Such problems can be correctly solved using either a perceptual-motor strategy (simulation of gear movements) or an abstract strategy (the parity strategy). Participants in the gesture-allowed condition were more likely to use perceptual-motor strategies than were participants in the gesture-prohibited condition. Gesture promoted use of perceptual-motor strategies both for participants who talked aloud while solving the problems (Experiment 1) and for participants who solved the problems silently (Experiment 2). Thus, spontaneous gestures influence strategy choices in problem solving.     

Beat gestures modulate auditory integration in speech perception

Spontaneous beat gestures are an integral part of the paralinguistic context during face-to-face conversations. Here we investigated the time course of beat-speech integration in speech perception by measuring ERPs evoked by words pronounced with or without an accompanying beat gesture, while participants watched a spoken discourse. Words accompanied by beats elicited a positive shift in ERPs at an early sensory stage (before 100 ms) and at a later time window coinciding with the auditory component P2. The same word tokens produced no ERP differences when participants listened to the discourse without view of the speaker. We conclude that beat gestures are integrated with speech early on in time and modulate sensory/phonological levels of processing. The present results support the possible role of beats as a highlighter, helping the listener to direct the focus of attention to important information and modulate the parsing of the speech stream.