A mental model of the another person’s state of mind including their thoughts, feelings, and beliefs, otherwise known as Theory of Mind (ToM), can be created to better predict their behavior and optimize our own decisions. These representations can be explicitly modeled during both the development and presence of stable cooperation via communication outcomes, allowing us to understand the sophistication or depth of mental coordination, involved in an individual’s social perception and reasoning. Almost all current scientific studies of ToM take a spectatorial approach, relying on observation followed by evaluation (e.g., the Sally-Anne Task). However given evidence that social cognition fundamentally shifts during valuationally significant social encounters with others, this study adopts a second-person approach. Each participant’s actions under dynamic uncertainty influence the joint reward probabilities of both, favoring cooperation and coordination. Only Teachers have knowledge of the correct action-reward contingencies, while Learners must ascertain the Teacher’s directive and correctly adjust their actions to obtain the optimal reward. The complexity of cooperative behaviors cannot be captured with simple reinforcement learning models, however a similarity in valuation exists, probing further investigation.

This research examines how comparison of objects underlies free categorization, an essential component of human cognition. Previous results using our binomial labeling task have shown that classification probabilities are affected in a graded manner as a function of similarity, i.e., the number of features shared by two objects. In a similarity rating task, people also rated objects sharing more features as more similar. However, the effect of matching features was approximately linear in the similarity task, but superadditive (exponential) in the labeling task. We hypothesize that this difference is due to the fact that people must select specific objects to compare prior to deciding whether to put them in the same category in the labeling task, while they were given specific pairs to compare in the rating task. Thus, the number of features shared by two objects could affect both stages (selection and comparison) in the labeling task, which might explain their super-additive effect, whereas it affected only the latter comparison stage in the similarity rating task. In this experiment, participants saw visual displays consisting of 16 objects from three novel superordinate artificial categories, and were asked to generate binomial (letter-number) labels for each object to indicate their super-and-subordinate category membership. Only one object could be viewed at a time, and these objects could be viewed in any order. This made it possible to record what objects people examine when labeling a given object, which in turn permits separate assessment of stage 1 (selection) versus stage 2 (comparison/decision). Our primary objective in this experiment was to determine whether the increase in category labeling probabilities as a function of level of match (similarity) can be explained by increased sampling alone (stage 1 model), an increased perception of similarity following sampling (stage 2 model), or some combination (mixed model). The results were consistent with earlier studies in showing that the number of matching discrete features shred by two objects affected the probability of same-category label assignment. However, there was no effect of the level of match on the probability of visiting the first matching object while labeling the second. This suggests that the labeling effect is not due to differences in the likelihood of comparing matching objects (stage 1) as a function of the level of match. Thus, the present data provides support for a stage 2 only model, in which the evaluation of similarity is the primary component underlying the level of match effect on free categorization.

The overarching goal of the present thesis was to study women’s perceptions of sexual assault perpetrators and how those perceptions relate to fear of sexual assault. Previous researchers have developed a substantial literature on predictors and correlates of sexual assault perpetration. What is not known is how accurate women’s perceptions are of these predictors. Rationale from both evolutionary mismatch theory and social psychological stereotype theory suggests that women’s perceptions may be inaccurate. In the present thesis, I tested a set of hypotheses designed to examine individual differences in women’s perceptions of sexual assault perpetrators and how these perceptions relate to fear of rape. A total of 128 women completed a survey assessing their perceptions of characteristics of sexual assault perpetrators, their fears about sexual assault, their perceived risk of sexual assault, and their previous sexual assault related experiences. Results indicated that women’s perceptions of perpetrator characteristics were generally inaccurate. Furthermore, women’s overall level of accuracy was not predictive of their fear nor risk of stranger or acquaintance rape. However, women’s perceived risk of either stranger or acquaintance rape was predictive of their fear of each respective assault. These findings provide evidence for both evolutionary mismatch theory and social psychological stereotype theory. Implications regarding women’s sexual assault education and fear reduction are discussed.

Because there is a growing amount of contradictory evidence concerning the relationship of WISC-R subscale scores to hemispheric orientation, the present study examined the validity of the WISC-R subscale scores as indicators of individual hemispheric orientation. The present study hypothesized a significant relationship between Verbal-Performance scale score discrepancies and hemispheric orientation as assessed by conjugate lateral eye movements. This study also hypothesized that subjects with a right hemisphere orientation would score higher on t~ block design, picture completion, and object assembly subtests than would subjects with a left hemisphere orientation.

A review of the literature indicated that not all of the research in the area of overselectivity of autistic children has been in agreement. It does seem evident that some autistic children overselect. This could be the result of an attentional factor or a modality preference. This has important implications for the education of autistic children. In the light of the inconsistency of autistic children's reactions to sensory stimuli (Hermelin and O'Connor, 1970; Wing, 1972; Koegel, 1976) this investigator believe·d there was a need to determine if overselection is consistent before referring to the overselected modality as a preferred modality or comparing overselected modalities with the child's mode of communication (manual' or speech).

Patients with schizophrenia have extremely high levels of depression and suicide (Carlborg et al., 2008), thus, a better understanding of factors associated with poor quality of life (QoL) for this population is sorely needed. A growing body of research suggests that cognitive functioning in schizophrenia may be a strong predictor of overall QoL (Green et al., 2000), but individual domains of QoL have not been examined. Indirect evidence also suggests that emotion perception may underlie the relationship between neurocognition and QoL, but this hypothesis has also yet to be tested. Using a sample of 92 clinically stable schizophrenia patients, the current study explores the relationship between neurocognition, namely attention and working memory, and the following sub domains of QoL: social, vocational, intrapsychic foundations and environmental engagement. The current study also examines whether emotion perception mediates this relationship. In partial support of hypotheses, patients with more deficits in working memory reported decreased Occupational QoL and, although only marginally significant, decreased Total QoL. There was also a trend for poorer working memory to be associated with poorer Intrapsychic Foundations QoL. Contrary to hypotheses, emotion perception was not found to mediate the relationship between working memory and QoL. Current findings suggest that interventions that specifically target working memory may also improve many other aspects of schizophrenia patients? QoL.

Research has shown that young adults treat older adults with less blame and more forgiveness when they commit a social transgression. This study sought to understand whether the stereotype of an assumed positive personality and/or a supposed lack of cognitive ability are potential driving forces behind the greater leniency that young adults display toward older transgressors. Seventy-five young adult participants were randomly assigned to one of five experimental conditions. Participants’ aging stereotypes were primed with one of four paragraphs that depicted older adults as (a) socially warm and cognitively competent, (b) socially cold but cognitively competent, (c) socially warm but cognitively incompetent, or (d) socially cold and cognitively incompetent. A fifth group of participants was assigned to a control condition in which aging stereotypes were not deliberately activated. Participants then read 16 vignettes that varied in terms of (1) the age of the transgressor, (2) how socially close the participant is to the transgressor, and (3) the severity of the transgression. After reading each individual vignette, participants indicated how much they blamed the transgressor for the outcome, and how likely they would be to forgive him or her despite the outcome. Relative to younger transgressors, older transgressors were blamed less, and had a higher likelihood of receiving forgiveness. Participants were also more likely to forgive and less likely to blame transgressors after having been primed with a stereotypical older adult who is socially warm but cognitively incompetent. Inconsistent with expectations, the effect was not unique to the rating of older adult transgressors; it also applied to young transgressors.

A relatively new phenomenon in learning research called highlighting occurs when participants show a seemingly irrational preference to attribute a stronger cue-outcome association to a later presented perfect predictor when it is paired with an imperfect predictor than that of an earlier presented perfect predictor paired with the same imperfect predictor (Kruschke, 1996). Current research suggests that the highlighting effect depends on the ability to learn to shift attention away from an irrelevant cue toward a more relevant cue in order to reduce errors in causal judgment and preserve an earlier formed association (Kruschke, 2003). Much research has suggested that older adults have difficulty disengaging attention from irrelevant information, which could be problematic in the highlighting procedure (Cohn, Dustman, & Bradford, 1984; Tipper, 1991; Mutter, Naylor, & Patterson, 2005). However, the results of the current experiment suggest that older adults can learn attentional shifts in order to guide associative learning and reduce errors in causal judgments. These data prove to be a problem for many models of associative learning (e.g., Mackintosh, 1975; Rescorla & Wagner, 1972; Van Hamme & Wasserman, 1994), but support a model proposed by Kruschke (2006).

Recent research has documented that we tend to use the face to express some emotions, but use the body to express other emotions. To understand the contributions of the body to non-verbal emotional communication, we compared the performance of able-bodied participants who were allowed to express emotions naturally (standing) to able-bodied participants who were confined to a wheelchair. Theories of embodied emotion would predict that restraining the use of the body should change emotion production and communication confidence, especially for body-related emotions. Participants expressed six different emotions in three conditions: 1) naturally, 2) face only, and 3) body only. After each trial, they indicated their confidence that they effectively communicated the emotion. Results indicated that for emotion production, both groups used primarily the face to express happiness and disgust. We predicted that participants in the wheelchair group would use the face more to express body-related emotions, but our findings show that the extinction of body occurs with specific emotions. Like the standing group, wheelchair participants used their bodies to express submissive emotions of embarrassment and fear. In contrast, they showed a distinct lack of body use for emotional displays expressing higher status or dominant emotions--pride and anger. Nonetheless, confidence in communication did not differ across groups despite production differences. These findings suggest that current body states affect how emotions are expressed. In terms of embodied emotion theory, body restrictions may make a person feel less pride or anger. From an evolutionary standpoint, it might be that displaying pride or anger when one is less physically able reduces one’s chance for survival.

Both electronic note-taking (typing) and traditional note-taking (handwriting) are being utilized by college students to retain information. The effects of the method of note-taking and note-taking context were examined to determine if handwriting or typing notes and whether a lecture context or a textbook-reading context influenced retention. Pitzer College and Scripps College students were assigned to either handwrite or type notes on a piece of academic material presented in either a lecture or textbook context and were given a test to assess their retention. The results demonstrated that there was a significant main effect for typing notes such that typing notes produced higher retention scores than handwriting notes. The results also indicated that there was an interaction between method of note-taking and context such that the lowest scores were achieved in the condition in which participants handwrote notes during a lecture. In total, these findings suggest that typing as a method of note-taking may by an influential factor in memory retention, particularly in a lecture context.