Theory of mind refers to the ability to attribute mental states to others and to predict their behaviour based on inferences about their mental states, for example their perception, desires, or beliefs. Forty years ago, research on theory of mind originated from the question of whether or not chimpanzees (Pan troglodytes) have a theory of mind, a question that – after all this time – is still debated. In the present thesis, I investigate theory of mind and its precursors in birds of the crow family, specifically Eurasian jays (Garrulus glandarius), California scrub-jays (Aphelocoma californica), and carrion crows (Corvus corone corone). Corvids have been reported to possess theory of mind-like abilities. This qualification reflects the fact that most research on theory of mind in these birds has revolved around the ability to respond to perceptual and desire states of conspecifics, and so far has not produced evidence for or against an ability to also respond to others’ beliefs. Further, it is unclear which mechanisms could be the basis of corvids’ abilities. Thus, there are two open questions in regard to corvid theory of mind my thesis aims to address. To address these questions, first, I investigated the ability of Eurasian jays to respond to the false belief of a conspecific in a caching paradigm, where the knowledge of a conspecific observer about the accessibility of two caching sites was manipulated (Chapter 2). In Chapter 3 I explore which behavioural cues might present the basis of the jays’ ability to respond to the desire of a conspecific in a caching context. In Chapter 4, I report a study on biological motion perception in scrub-jays, a phenomenon suggested to be crucial for the detection of social agents. In Chapter 5, I assess scrub-jays’ sensitivity to gaze of a human and a conspecific. Finally, in Chapter 6, I report a study investigating the face inversion effect in carrion crows, an effect that is indicative of a ‘special’ relevance of faces. I conclude by discussing how the presented studies could help us inform our understanding of corvid theory of mind-like abilities.

In this study, behavioral (post-error response time) and electrophysiological (ERN amplitude and latency) indices of error-monitoring were examined in individuals with autism and typical development. Participants were presented with a series of faces, and they were asked to quickly and accurately determine the gender or the affect of the faces. Younger participants showed post-error slowing for the Gender Task, while older participants showed post-error slowing for the Affect Task. With age, participants showed a greater differentiation between correct and incorrect responses on both ERN amplitude and ERN latency. For the Gender Task only, participants with typical development showed a greater differentiation between correct and incorrect responses than participants with autism on ERN amplitude. Evidence of more error monitoring on the Affect Task was associated with less autistic symptomology, fewer internalizing problems, and better social skills. Evidence of more error monitoring on the Gender Task was associated with greater autistic symptomology and fewer internalizing problems. Overall, age, regardless of diagnostic group, had a substantial effect on face processing and error monitoring abilities. Individuals with autism showed an ability to engage in error monitoring, with only mild impairments in error monitoring. The data suggest that error monitoring is not a core deficit of autism; however, individual differences in error monitoring may significantly moderate the expression of autism.

This study applied Andersen??s social cognitive paradigm for the experimental study of transference to the problem of understanding transference effects on the affective interactions and clinical inferences of student physicians with standardized patients. The investigator designed a 2X2 experimental study in which the independent variables were: source of information for statements about a standardized patient (participant??s own or matched participant??s) and valence of information in statements about the patient (positive or negative). Dependent variables were: affect expressed by a student physician in videotapes of a medical interview with a standardized patient, as measured by a modified version of the Specific Affect ?? 16 code system (SPAFF-16), and clinical inferences by the student physician as measured by the Physician Clinical Inferences Scale (PCIS) developed by the investigator. Covariates included gender, physician verbosity, and intergenerational family relationship variables as measured by the Personal Authority in the Family System Questionnaire ?? Version C (PAFS-QVC). A 2X2 MANCOVA was conducted, along with hierarchical regressions of gender and PAFSQVC variables as predictors of negative and positive affect and clinical inferences (likelihood of treatment success and patient as partner). One sample of undergraduate medical students (n= 71) provided data for the study. Results indicated no statistically significant differences between experimental groups regarding the effect of the experimental manipulation of patient information on student physicians?? affective interactions and clinical inferences with patients when gender, physician verbosity, and related PAFS-QVC variables were controlled. Hierarchical regression analyses of gender and related PAFS-QVC variables onto positive affect, negative affect, clinical inferences (patient as partner) and clinical inferences (likelihood of treatment success) revealed statistically significant effects of intergenerational family relationship and peer relationship variables on student physicians?? affective interactions and clinical inferences with patients.

How, at a fundamental level, do people construe their social world? Mainstream perspectives on social cognition posit that we do so largely by applying hierarchically structured concepts (or schemas) about similar classes of people and events to selectively interpret and elaborate on the complex array of social information. In this dissertation I propose a complementary perspective according to which people lend meaning to the social world in large part through conceptual metaphors that use the structure of familiar, typically concrete concepts to reason about and evaluate information in dissimilar, typically more abstract conceptual domains. I describe a model of metaphor-enriched social cognition (MESC) that provides a preliminary framework for understanding the role of conceptual metaphor in everyday social thought and action. I review research supporting hypotheses derived from the model with respect to the effects of conceptual metaphor on social perception, attitudes, and behavior, and I present four studies designed to further test these hypotheses. Study 1 shows that the sensation of being physically burdened increased the subjective obligatory nature of everyday activities. Study 2 shows that images depicting historically significant people and events (both positively and negatively valenced) were perceived as larger in size than those depicting historically insignificant people and events. In Study 3, priming participants with the beneficial consequences of physical covering led to more permissive attitudes toward the government withholding information from the public, and this effect was specific to those with ambivalent prior attitudes toward the value of governmental secrecy. Study 4 showed that a heightened motivation to protect one's own body from contamination led to harsher attitudes toward immigrants entering the United States among those subtly primed to conceptualize the country as a body but not those primed with a literal conception of the country. Although further research and theoretical refinement are necessary, the MESC model is a step toward acquiring a richer, more general conception of everyday social meaning-making and its implications for social life.

A two-part study was undertaken to investigate the relationship between fiction writing and social cognition: the ability to make inferences about the mental states of others. First, an online survey was administered that assessed beliefs held by the general public about the social cognition of fiction writers compared to a variety of other professions. The findings revealed that the general public believes fiction writers demonstrate above average sociocognitive abilities. Next, the possibility of an empirical relationship between social cognition and fiction writing was explored by comparing two groups of fiction writers (established/published and intermediate writers) and a control group on measures directly assessing different facets of social cognition (e.g., social perception, interpreting body language, and making inferences about interpersonal interactions on video and in written vignettes). Participants were also asked to self-report their own sociocognitive abilities via a questionnaire assessing perspective taking. Related variables to social cognition were also tested, including self-reported interpersonal/social reactivity and cognitive complexity/differentiation. Potential confounding variables, including age, level of depression, verbal IQ, and tendency to read fiction were also measured and accounted for. All participants provided a short story writing sample which was scored by three experts for quality, as well as potential textual determinants of social cognition: character transparency and point of view. The results of the study consistently revealed a lack of between-group differences on measures of social cognition as well as the related measure of cognitive complexity/differentiation. Fiction writing quality and character transparency correlated only with cognitive complexity/differentiation, but not with any variables directly assessing social cognition. Taken together, the results of the study suggest that, contrary to public perceptions, and contrary to the hypotheses of many theorists in the literature, fiction writers do not demonstrate superior sociocognitive abilities.

A two-part study was undertaken to investigate the relationship between fiction writing and social cognition: the ability to make inferences about the mental states of others. First, an online survey was administered that assessed beliefs held by the general public about the social cognition of fiction writers compared to a variety of other professions. The findings revealed that the general public believes fiction writers demonstrate above average sociocognitive abilities. Next, the possibility of an empirical relationship between social cognition and fiction writing was explored by comparing two groups of fiction writers (established/published and intermediate writers) and a control group on measures directly assessing different facets of social cognition (e.g., social perception, interpreting body language, and making inferences about interpersonal interactions on video and in written vignettes). Participants were also asked to self-report their own sociocognitive abilities via a questionnaire assessing perspective taking. Related variables to social cognition were also tested, including self-reported interpersonal/social reactivity and cognitive complexity/differentiation. Potential confounding variables, including age, level of depression, verbal IQ, and tendency to read fiction were also measured and accounted for. All participants provided a short story writing sample which was scored by three experts for quality, as well as potential textual determinants of social cognition: character transparency and point of view. The results of the study consistently revealed a lack of between-group differences on measures of social cognition as well as the related measure of cognitive complexity/differentiation. Fiction writing quality and character transparency correlated only with cognitive complexity/differentiation, but not with any variables directly assessing social cognition. Taken together, the results of the study suggest that, contrary to public perceptions, and contrary to the hypotheses of many theorists in the literature, fiction writers do not demonstrate superior sociocognitive abilities.

Behaviour changes including apathy, disinhibition, irritability or social skills difficulties are commonly reported in individuals following an acquired brain injury (ABI) or presence of a neurodegenerative condition. In addition, there is evidence that these behaviour changes are related to increased caregiver burden and early nursing home and hospital admissions. Yet, very little is known about possible factors relating to behaviour change in ABI or neurodegeneration. Social cognition difficulties have been proposed as possible predictors of behaviour change in ABI or neurodegeneration. However, the evidence for the existence of a link between behaviour and social cognition remains weak. The aims of the current thesis were twofold; firstly, it aimed to systematically examine the current evidence on the link between social cognition and behaviour change in ABI or neurodegeneration. Secondly, the thesis aimed to assess the relationship between social cognition and behaviour change in the context of relationship quality in a sample of 27 individuals with a diagnosis of Dementia of the Alzheimer Type (DAT) or mixed DAT and vascular dementia and their co-residing partners. A review of the current literature showed a discrepancy in the evidence for an association between behaviour change and social cognition between ABI and neurodegenerative participant samples. The link between social cognition and behaviour changes in ABI, although suggested, was not found in the three included studies. However, this was not the case for neurogenerative samples. Although most of the included studies focused on a particular condition, frontotemporal dementia (FTD), evidence for this link was also present in one study focusing on DAT. Following from this review, the present thesis examined the existence of this association further in individuals with DAT/ mixed dementia. The study used partners’ reports on behaviour and relationship quality and examined their associations with individuals with DAT/mixed dementia’s performance on a social cognition task. Although the DAT/mixed dementia group showed an impaired performance on a social cognition task compared to their partners, there were no significant relationships between reported behaviour changes, relationship quality and social cognition performance in individuals with DAT/mixed dementia. These findings suggest that despite previous literature indicating a link between behaviour change and social cognition in DAT or mixed dementia, this relationship is yet to be fully established in this population and further research is needed to inform current practice and models of behaviour change in neurodegeneration. The present findings are also discussed with regards to implications for clinical practice and adaptations in psychotherapy for people with DAT or mixed dementia and their partners.

The aim of this thesis was to explore the relationship between anger and aggression, insecure attachment, paranoia and social cognition in psychosis. It is presented as three separate papers: 1) a systematic review examining the relationship between paranoia and aggression in schizophrenia spectrum disorders, 2) an empirical study investigating predictors and mediators of trait anger across the psychosis continuum: the role of insecure attachment, paranoia and social cognition and 3) a critical reflection of the research process. Paper one provides a systematic review of the relationship between paranoia and aggression in schizophrenia spectrum disorders. A comprehensive search of the published literature identified fifteen eligible studies. The quality of the included articles is critically appraised during the synthesis of the findings. Methodological limitations, clinical implications and recommendations for future research are considered. Paper two provides an examination of predictors and mediators of trait anger across the psychosis continuum, considering the role of insecure attachment, paranoia and social cognition. Tests of theory of mind and measures of attachment, hostile attribution bias, paranoia and anger were administered to 174 participants (14 ultra-high risk of psychosis, 20 first-episode psychosis, 20 established psychosis and 120 non-clinical). Multiple regression analysis found attachment avoidance, paranoia and hostile attribution bias were significantly related to trait anger. Mediation analysis revealed paranoia mediated the relationship between attachment avoidance and trait anger. The results are discussed with consideration to previous research and limitations of the study. Clinical implications and recommendations for future research are also offered. Paper three provides a critical reflection of papers one and two, with reference to their design, implementation and interpretation. Personal reflections of the research process as a whole are also provided.

Historically, a dominant view has been that we understand others by directly matching their actions to our own motor system, emphasising the importance of bottom-up processes during social perception. However, more recent theories suggest that instead we actively anticipate others actions based upon intentions inferred outside of the motor system, from social cues such as language, eye gaze and object information. Across 13 experiments, the established representational momentum paradigm, as well as a cross-modal visuotactile paradigm were employed to test the hypothesis that people’s perceptual processes while observing the actions of others would be affected by such top-down cues about the actor’s intentions. We found, first, that people overestimate other people’s actions in the direction of motion. Importantly, these overestimations were directly influenced by social cues. Saying or hearing a word congruent with a subsequently observed action resulted in the action being perceived as further along its trajectory. Second, we found that people anticipate the tactile outcomes of other people’s actions with their own sensory tactile systems but that the mechanisms differed for bottom-up and top-down driven predictions. In a task in which people had to detect tactile stimulation while watching others, seeing impending hand-object contact increased the bias to perceive tactile stimulation, even when there was none, while impending contact that could not be seen but only inferred increased tactile sensitivity. These findings are discussed in the context of recent theories of top-down predictive processing during social perception and from the perspective of multisensory integration.

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