Reverse production effect: children recognize novel words better when they are heard rather than produced

This research investigates the effect of production on 4.5‐ to 6‐year‐old children's recognition of newly learned words. In Experiment 1, children were taught four novel words in a produced or heard training condition during a brief training phase. In Experiment 2, children were taught eight novel words, and this time training condition was in a blocked design. Immediately after training, children were tested on their recognition of the trained novel words using a preferential looking paradigm. In both experiments, children recognized novel words that were produced and heard during training, but demonstrated better recognition for items that were heard. These findings are opposite to previous results reported in the literature with adults and children. Our results show that benefits of speech production for word learning are dependent on factors such as task complexity and the developmental stage of the learner.     

Food sharing and feeding another person suggest intimacy; two studies of American college students

Ethnographic work indicates that food transfer has social significance, but food transfer has not previously been considered as a nonverbal communication channel. We categorize social food transfer along two dimensions: nature of the behaviour in the transfer (X shares food with or feeds Y), and the state of the food transferred (Y's food never contacted by X, or Y's food previously bitten/tasted/touched by X; we call the latter food consubstantiation (shared substance)). These two dimensions generate the four conditions investigated in this study: no sharing, sharing, sharing with consubstantiation, and feeding. The social significance of these types of situations was assessed in two ways. American college students indicated in a questionnaire both the extent to which they transfer food within different relationships, and what they took to be normative among American college students. Second, a different group of students participated in an Asch impression study in which they observed a videotape of two young adults of opposite sex eating at a restaurant, with the variable across subjects being the four conditions designated above. Viewers were asked to assess the relationship between the young adults, and to rate the degree of intimacy between the adults in terms of mutual feelings and acts of intimacy (e.g. sharing drinks, touching, having sexual relations). Results from both studies are congruent, and indicate that sharing implies a positive/friendly social relationship, and feeding implies a stronger, often romantic relationship. Consubstantiation superimposed on sharing modestly increased judgments of intimacy and closeness of relationship. © 1998 John Wiley & Sons, Ltd.     

A comparison of perceptions of counselling in Ireland and the United States

The present study compared 50 Irish and 50 US graduate and undergraduate psychology and counselling students on the ways they rated counsellors, counselling, and group counselling on a semantic differential. Males were also contrasted to females on these concepts. A 2 2 2 2 2 MANOVA was used for the data analysis where the independent variables were country, class, and gender, and the dependent variables were the evaluative and potency scales of the semantic differential for counsellors, counselling, and group counselling. The Irish sample rated the potency of counselling significantly higher as did women. Counselling graduates evaluated group counselling and counsellors significantly higher than psychology undergraduates.     

Quantified statements are recalled as generics: evidence from preschool children and adults

Generics are sentences such as "ravens are black" and "tigers are striped", which express generalizations concerning kinds. Quantified statements such as "all tigers are striped" or "most ravens are black" also express generalizations, but unlike generics, they specify how many members of the kind have the property in question. Recently, some theorists have proposed that generics express cognitively fundamental/default generalizations, and that quantified statements in contrast express cognitively more sophisticated generalizations (Gelman, 2010; Leslie, 2008). If this hypothesis is correct, then quantified statements may be remembered as generics. This paper presents four studies with 136 preschool children and 118 adults, demonstrating that adults and preschoolers alike tend to recall quantified statements as generics, thus supporting the hypothesis that generics express cognitively default generalizations.     

BOLD response to semantic and syntactic processing during hypoglycemia is load-dependent

This study investigates how syntactic and semantic load factors impact sentence comprehension and BOLD signal under moderate hypoglycemia. A dual session, whole brain fMRI study was conducted on 16 healthy participants using the glucose clamp technique. In one session, they experienced insulin-induced hypoglycemia (plasma glucose at ∼50 mg/dL); in the other, plasma glucose was maintained at euglycemic levels (∼100 mg/dL). During scans subjects were presented with sentences of contrasting syntactic (embedding vs. conjunction) and semantic (reversibility vs. irreversibility) load. Semantic factors dominated the overall load effects on both performance (p < 0.001) and BOLD response (p < 0.01, corrected). Differential BOLD signal was observed in frontal, temporal, temporo-parietal and medio-temporal regions. Hypoglycemia and syntactic factors significantly impacted performance (p = 0.002) and BOLD response (p < 0.01, corrected) in the reversible clause conditions, more extensively in reversible-embedded than in reversible-conjoined clauses. Hypoglycemia resulted in a robust decrease in performance on reversible clauses and exerted attenuating effects on BOLD unselectively across cortical circuits.The dominance of reversibility in all measures underscores the distinction between the syntactic and semantic contrasts. The syntactic is based in a quantitative difference in algorithms interpreting embedded and conjoined structures. We suggest that the semantic is based in a qualitative difference between algorithmic mapping of arguments in reversible clauses and heuristic linking in irreversible clauses. Because heuristics drastically reduce resource demand, the operations they support would resist the load-dependent cognitive consequences of hypoglycemia.     

Waiting for more: the performance of domestic dogs (Canis familiaris) on exchange tasks

Five domestic dogs (Canis familiaris) were tested in a cooperative exchange task with an experimenter, as previously tested in non-human primates. In the first task, the dogs exchanged to maximise payoffs when presented with food items of differing quality. All consistently exchanged lower-value for higher-value rewards, as determined by their individual food preference, and exchanges corresponded significantly with the spontaneous preferences of three dogs. Next, all subjects demonstrated an ability to perform two and three exchanges in succession, to gain both qualitative and quantitatively increased rewards (group mean = 72 and 92% successful triple exchanges, respectively). Finally, the ability to delay gratification over increasing intervals was tested; the dogs kept one food item to exchange later for a larger item. As previously reported in non-human primates, there was considerable individual variation in the tolerance of delays, between 10 s and 10 min for the largest rewards. For those who reached longer time lags (>40 s), the dogs gave up the chance to exchange earlier than expected by each subject’s general waiting capacity; the dogs anticipated delay duration and made decisions according to the relative reward values offered. Compared to primates, dogs tolerated relatively long delays for smaller value rewards, suggesting that the socio-ecological history of domestic dogs facilitates their performance on decision-making and delay of gratification tasks.     

Posttraumatic Stress and Depression Reactions Among Survivors of the Istanbul November 2003 Terrorist Attacks

This study investigated posttraumatic stress and depression reactions among survivors of the Istanbul November 2003 terrorist bombings that destroyed synagogues, an HSBC bank, and the British General Consulate. One hundred and forty-nine survivors completed a questionnaire measuring exposure, current posttraumatic stress, and depression responses 6 months after the blasts. This study showed that the prevalence rate of posttraumatic stress disorder (PTSD) among survivors was 35.6%?and the rate of depression was 23.5%. PTSD was strongly predicted by perceived life threat, whereas depression was strongly predicted by death of a close friend. Overall, female survivors were found to be more vulnerable to developing posttraumatic stress as well as depression after the terrorist bombings.     

Communicative intentions in wild chimpanzees: persistence and elaboration in gestural signalling

We examine evidence for communicative intent during conspecific interactions in wild chimpanzees (Budongo Forest, Uganda), focusing on persistence in gestural communication. Previous research indicates that great apes have large gestural repertoires and produce gestural communication in a flexible and intentional manner, including the production of gesture sequences. Although there is a lack of consensus on the form and function of sequences, there is some evidence that sequences are produced when signallers fail to receive any response from a recipient. Here, we provide first systematic evidence for communicative persistence in wild chimpanzees. Rather than examining only the presence or absence of a response, we used the most commonly observed response to assign meanings to gestures and examined sequence production in relation to response congruency. Chimpanzees ceased communication if successful, but persevered when unsuccessful. Chimpanzees repeated gestures when a response partially matched their goal but substituted the original gesture when a response was incongruent. Persistence was also mediated by recipient intent to respond, with more sequences produced within competitive than affiliative contexts. Gestures within sequences were homogenous in semantic meaning and signallers continued until the response matched the assigned meaning of the initial gesture. Gestural sequence production was not primarily affective; gesture intensity (in terms of modality) did not increase within sequences. Chimpanzee gestural sequences emerged to achieve specific outcomes; given variability in recipient behaviour following initial gestures, signallers were flexible in their persistence towards these goals.     

Differences in body esteem by weight status,gender, and physical activity among young elementary school-aged children

Body satisfaction is important for the prevention of disordered eating and body image disturbances. Yet, little is known about body esteem and what influences it among younger children. The purpose of this study was to evaluate body esteem and the relationships between body esteem, weight, gender, and physical activity in elementary school children. A total of 214 third graders in a U.S. Midwestern state participated in this correlational study. The Body Mass Index-for-age, the Body Esteem Scale (BES), BE-Weight, BE-Appearance, and a Physical Activity Checklist were used to examine the relationships between the variables using bivariate correlations and analysis of variance. While children's body esteem did not differ by physical activity, important interactions were identified between weight status and gender in global body esteem and BE-Appearance. It is critical to examine attitudes about weight and appearance and the relationship between body esteem and self-esteem further among middle childhood-aged children.