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Gesture and speech are tightly linked and form a single system in typical development. In this review, we ask whether and how the role of gesture and relations between speech and gesture vary in atypical development by focusing on two groups of children: those with peri‐ or prenatal unilateral brain injury (children with BI) and preterm born (PT) children. We describe the gestures of children with BI and PT children and the relations between gesture and speech, as well as highlight various cognitive and motor antecedents of the speech‐gesture link observed in these populations. We then examine possible factors contributing to the variability in gesture production of these atypically developing children. Last, we discuss the potential role of seeing others’ gestures, particularly those of parents, in mediating the predictive relationships between early gestures and upcoming changes in speech. We end the review by charting new areas for future research that will help us better understand the robust roles of gestures for typical and atypically‐developing child populations. [ABSTRACT FROM AUTHOR]

Hand gestures play an integral role in multimodal language and communication. Even though the self-oriented functions of gestures, such as activating a speaker's lexicon and maintaining visuospatial imagery, have been emphasized, gestures' functions in creative thinking are not well-established. In the current study, we investigated the role of iconic gestures in verbal divergent thinking—a creative thinking process related to generating many novel ideas. Based on previous findings, we hypothesized that iconic gesture use would facilitate divergent thinking in young adults, especially those with high mental imagery skills. Participants performed Guildford's Alternative Uses Task in a gesture-spontaneous and in a gesture-encouraged condition. We measured fluency (number of ideas), originality (uniqueness of ideas), flexibility (number of idea categories), and elaboration (number of details) in divergent thinking. The results showed that producing iconic gestures in the gesture-encouraged condition positively predicted fluency, originality, and elaboration. In the gesture-spontaneous condition, producing iconic gestures also positively predicted elaboration but negatively predicted flexibility. Mental imagery skills did not interact with the effects of gestures on divergent thinking. These results suggest that iconic gestures are a promising candidate for enhancing almost all aspects of divergent thinking. Overall, the current study adds a new dimension to the self-oriented function of iconic gestures, that is, their contribution to creative thinking. [ABSTRACT FROM AUTHOR]

Temporal perspectives allow us to place ourselves and temporal events on a timeline, making it easier to conceptualize time. This study investigates how we take different temporal perspectives in our temporal gestures. We asked participants (n = 36) to retell temporal scenarios written in the Moving‐Ego, Moving‐Time, and Time‐Reference‐Point perspectives in spontaneous and encouraged gesture conditions. Participants took temporal perspectives mostly in similar ways regardless of the gesture condition. Perspective comparisons showed that temporal gestures of our participants resonated better with the Ego‐ (i.e., Moving‐Ego and Moving‐Time) versus Time‐Reference‐Point distinction instead of the classical Moving‐Ego versus Moving‐Time contrast. Specifically, participants mostly produced more Moving‐Ego and Time‐Reference‐Point gestures for the corresponding scenarios and speech; however, the Moving‐Time perspective was not adopted more than the others in any condition. Similarly, the Moving‐Time gestures did not favor an axis over the others, whereas Moving‐Ego gestures were mostly sagittal and Time‐Reference‐Point gestures were mostly lateral. These findings suggest that we incorporate temporal perspectives into our temporal gestures to a considerable extent; however, the classical Moving‐Ego and Moving‐Time classification may not hold for temporal gestures. [ABSTRACT FROM AUTHOR]

Language about time is an integral part of how we spatialise time. Factors like temporal focus can be related to time spatialisation as well. The current study investigates the role of language in how we spatialise time, using a temporal diagram task modified to include the lateral axis. We asked participants to place temporal events provided in non-metaphorical, sagittal metaphorical, and non-sagittal metaphorical scenarios on a temporal diagram. We found that sagittal metaphors elicited sagittal spatialisations of time, whereas the other two types elicited lateral spatialisations. Participants sometimes used the sagittal and lateral axes in combination to spatialise time. Exploratory analyses indicated that individuals' time management habits, temporal distance, and event order in written scenarios were related to time spatialisations. Their temporal focus scores, however, were not. Findings suggest that temporal language plays an important role in how we map space onto time. [ABSTRACT FROM AUTHOR]

Adaptive memory retains information that would increase survival chances and reproductive success, resulting in the survival processing effect. Less is known about whether the reliability of the information interacts with the survival processing effect. From an adaptive point, information from reliable sources should lead to better encoding of information, particularly in a survival context. In Turkish, specific linguistic components called evidentiality markers encode whether the information presented is firsthand (direct) or not (indirect), providing insight into source reliability. In two experiments, we examined the effect of evidentiality markers on recall across survival and nonsurvival (moving) contexts, predicting that the survival processing effect would be stronger for information marked with evidentiality markers indicating direct information. Results of both experiments yielded a robust survival processing effect, as the sentences processed for their relevance to survival were better remembered than those processed for their relevance to nonsurvival events. Yet the marker type did not affect retention, regardless of being tested as a between- or within-subject factor. Specifically, the survival processing effect persisted even with evidentiality markers indicating indirect information, which suggests that the processing of survival-related information may be privileged even if potentially unreliable. We discuss these results in the context of recent studies of the interaction of language with memory. [ABSTRACT FROM AUTHOR]

Inference-making is a critical process in understanding and processing information daily. People synthesize inputs into a whole and retain the whole (gist) instead of specific parts (verbatim). False recognition of inferred information offers evidence for it. We conducted two studies to examine whether memory errors occurred similarly when bilinguals were tested separately and concurrently on two languages, and whether bilinguals remembered the language in which the information was received (language tag).We recruited Turkish native speakers who spoke English as a second language. After inducing spatial inferences about objects, we tested participants on configuration, sentence recognition, and language recognition in Turkish, English, and dual-language conditions. We measured their second language proficiency and executive functioning with standardized assessments.We performed within-subjects analyses of covariance to investigate the within-language differences in sentence recognition and the role of individual cognitive differences (N = 34 in Experiment 1, N = 48 in Experiment 2).Experiment 1 showed that inferences were falsely recognized in L1 (Turkish) and L2 (English) conditions, but not in the dual-language. We found no effect of individual cognitive differences. In Experiment 2, we replicated Experiment 1 and found that false recognition of inferred sentences was predicted more by lower executive functions (EF) scores and higher second language proficiency. In both experiments, participants accurately identified the language tag. Higher EF scores predicted higher tag accuracy. We conclude that inferring information in the second language induces memory errors, and inferences are tagged with the language of encoding.We used an ecologically valid sentence-level paradigm to test inferences and their connection to bilingual false memories in the second language and dual-language contexts. We explored the individual differences in language and cognitive abilities.Bilingual information processing is influenced significantly by exposure to stimuli, task difficulty, the language context, and language proficiency. [ABSTRACT FROM AUTHOR]

Many training programs have aimed to improve creative thinking abilities in various settings. The study of relevant literature revealed a relatively lower number of creativity programs for children than those developed for adults. The current work introduces a new and comprehensive nineweek long creativity intervention program implemented (out of school-setting) in 8- to 11-year-old children of socioeconomically disadvantaged families in Turkey. The intervention program was organized around four main themes (Persona, Object, Surrounding, Experience) and composed of nine activities: collection making, identity box, building a memory-device, designing an object, sensory mapping, designing a space, visual storytelling, exploring an imaginary planet, and solving a social conflict. Children (n = 159) were randomly assigned to experimental and control groups, and they took the Torrance Tests of Creative Thinking both before and after the intervention. Results showed that children in the experimental group had significantly higher verbal fluency and originality scores at the posttest compared to the control group. These results provide further evidence for the trainability of creativity and introduce a novel, affordable creativity intervention program that is feasible enough to be implemented in and out of the school setting. [ABSTRACT FROM AUTHOR]

Information can be conveyed via multiple channels such as verbal and gestural (visual) channels during communication. Sometimes the information from different channels does not match (e.g., saying right while pointing to the left). How do addressees choose which information to act upon in such cases? In two experiments, we investigated this issue by having participants follow instructions on how to move objects on the screen. Experiment 1 examined whether people's choice of channel can be altered by feedback favoring either the verbal or the gestural channel. In Experiment 2, there was no feedback and participants were free to choose either channel. We also assessed participants' verbal and visuospatial working memory capacities. Results showed that, when faced with contradicting information, there is a natural bias at the group level toward relying on the verbal channel, although this bias can be temporarily altered by probabilistic feedback. Moreover, when labels were shorter and of higher frequency, participants relied more on the verbal channel. In the absence of feedback, the capacity of individuals' visual, but not verbal, working memory determined reliance on one channel versus the other. Collectively, these results show that information selection in communication is influenced by group-level biases, as well as the properties of items and characteristics of individuals. [ABSTRACT FROM AUTHOR]

This study examined whether the metacognitive system monitors the potential positive effects of gestures on spatial thinking. Participants (N = 59, 31F, Mage = 21.67) performed a mental rotation task, consisting of 24 problems varying in difficulty, and they evaluated their confidence in their answers to problems in either gesture or control conditions. The results revealed that performance and confidence were higher in the gesture condition, in which the participants were asked to use their gestures during problem-solving, compared with the control condition, extending the literature by evidencing gestures' role in metacognition. Yet, the effect was only evident for females, who already performed worse than males, and when the problems were difficult. Encouraging gestures adversely affected performance and confidence in males. Such results suggest that gestures selectively influence cognition and metacognition and highlight the importance of task-related (i.e., difficulty) and individual-related variables (i.e., sex) in elucidating the links between gestures, confidence, and spatial thinking. [ABSTRACT FROM AUTHOR]

People are more disfluent in their second language (L2) than their first language (L1). Gesturing facilitates cognitive processes, including speech production. This study investigates speech disfluency and representational gesture production across Turkish-English bilinguals' L1 (Turkish) and L2 (English) through a narrative retelling task (N = 27). Results showed that people were more disfluent and used more representational gestures in English. Controlling for L2 proficiency, people were still more disfluent in English. The more people were proficient in L2, the more they used gestures in that language. Similarly, disfluency-gesture co-occurrences were more common in English. L2 proficiency was positively correlated with the likelihood of a disfluency being accompanied by a gesture. These findings suggest that gestures may not necessarily compensate for weak language skills. Rather, people might gesture during disfluent moments if they can detect their errors, suggesting a close link between representational gestures and language competency in benefiting from gestures when disfluent. [ABSTRACT FROM AUTHOR]