Hierarchical model of generalized and specific vulnerabilities in anxiety

This study evaluated a theoretical hierarchical relationship among the general anxiety vulnerability variable of neuroticism, the specific vulnerability variables of anxiety sensitivity and intolerance of uncertainty, and variables reflecting specific anxiety foci including panic symptoms, health anxiety, obsessive-compulsive symptoms and generalized anxiety/worry. Questionnaires assessing these variables were administered to a non-clinical sample of 91 first-year psychology students (64.8% women). Path analysis results were highly consistent with the hypothesized hierarchical model. Neuroticism was found to have a significant direct effect on both anxiety sensitivity and intolerance of uncertainty. Both neuroticism and anxiety sensitivity had direct significant effects on panic symptoms, neuroticism and intolerance of uncertainty both made significant direct contributions to the prediction of worry, and neuroticism made a significant direct contribution to the prediction of obsessive-compulsive symptoms. Contrary to the hypothesized model, anxiety sensitivity but not neuroticism uniquely predicted health anxiety. The results of this study provide initial empirical evidence for a hierarchical relationship among general and specific vulnerabilities, and specific anxiety manifestations.     

Intonational marking of given and new information: Some consequences for comprehension

The role of intonation in conveying discourse relationships in auditory sentence comprehension was investigated in two experiments. Using the simple comprehension time paradigm, Experiment 1 found that sentences with accented new information were understood faster than sentences with a neutral intonation contour and that the presence of accent in context sentences facilitated comprehension of subsequent targets. Both experiments showed faster comprehension times in conditions in which accent placement was appropriate for the information structure of the sentence. In Experiment I, comprehension times were faster when the accent fell on the information focus than when it fell elsewhere in the sentence. In Experiment 2, faster times resulted when new information was accented and given information was not, compared to conditions in which this accent pattern was reversed. This effect held for both active and passive sentences, and whether the new information occurred in the subject or object position.     

Age-related differences in idea generation and selection for propositional language

Conceptual preparation mechanisms such as novel idea generation and selection from amongst competing alternatives are critical for language production and may contribute to age-related language deficits. This study investigated whether older adults show diminished idea generation and selection abilities, compared to younger adults. Twenty younger (18–35 years) and 20 older (60–80 years) adults completed two novel experimental tasks, an idea generation task and a selection task. Older participants were slower than younger participants overall on both tasks. Importantly, this difference was more pronounced for task conditions with greater demands on generation and selection. Older adults were also significantly reduced on a semantic, but not phonemic, word fluency task. Overall, the older group showed evidence of age-related decline specific to idea generation and selection ability. This has implications for the message formulation stage of propositional language decline in normal aging.     

The Stigmatising Implications of Presenting Schizophrenia as a Genetic Disease

This study aimed to investigate the hypothesis that belief in a genetic aetiology of schizophrenia will increase the stigma associated with the disorder. Levels of five potentially stigmatising attitudes were compared in two groups of participants who had read a vignette describing an individual who has schizophrenia. In one group the disorder was explained as being caused by ‘genetic’ factors, and in the other by ‘environmental’ factors. This study found that three of the five potentially stigmatising attitudes measured were increased when participants read a vignette with a genetic causation rather than an environmental causation. Firstly, genetic attributions increased levels of associative stigma towards close relatives (p < 0.001). Secondly, participants viewed recovery as less likely when genetic factors were implicated as causative (p < 0.001). Finally, there was also an increased perception of the character’s “dangerousness” when the condition was explained by genetic factors (p < 0.05). Contrary to previous research was the finding that perceived aetiology had no effect on participant’s desire for social distance from an affected individual. Neither did perceived aetiology influence beliefs about moral accountability. The implications of these findings suggest that genetic counsellors and other health professionals, who are providing genetic information to those affected by schizophrenia should be aware of the possibility that a genetic explanation of schizophrenia could increase potentially stigmatising attitudes towards their clients and their clients’ families. It is also possible that individuals with a diagnosis of schizophrenia may themselves form deterministic interpretations of the genetic information they receive and subsequently be less likely to adopt behavioural advice or adhere to treatment. Counsellors and health professionals should strive to present information in a balanced manner, ensuring recipients understand the multi-factorial causes of the disease.     

Post-Traumatic Reactions in Adolescents: How Well Do the DSM-IV PTSD Criteria Fit the Real Life Experience of Trauma Exposed Youth?

This study examined the structure and symptom specific patterns of post traumatic distress in a sample of 1,581 adolescents who reported exposure to at least one traumatic event. Symptom reporting patterns are consistent with past literature in that females reported more symptoms than males and older youth reported more symptoms than did their younger peers. Young people reporting exposure to exclusively violent type traumas were also found to be more likely to endorse symptoms than peers exposed exclusively to non violent type traumas. Confirmatory factor analysis provided stronger support for a four-factor model of PTSD than either the DSM-IV model or an alternate model. Further examination of the four factor model revealed gender differences in factor loadings with small to moderate effect sizes for recurrent, distressing memories, flashbacks, restricted affect, difficulty remember details, detachment, limited future orientation, hypervigilance and startle symptoms. Differences in factor loadings with the four factor model were also noted between younger and older adolescents, with medium to large effect sizes on the arousal items. In contract, comparison of the factor loadings revealed only small differences between youth exposed exclusively to violent traumatic stressors and those exposed exclusively to non violent traumatic stressors, suggesting relative similarity between these two groups.     

PERCEPTIONS OF RELATIONAL AND PHYSICAL AGGRESSION AMONG COLLEGE STUDENTS: EFFECTS OF GENDER OF PERPETRATOR, TARGET, AND PERCEIVER

This study examined gendered perceptions of relational and physical aggressive behaviors and personal experiences with both types of aggression. Prior research suggested that physical aggression by males and relational aggression by females would be perceived most negatively. College students (186 female, 128 male) rated the acceptability and harmfulness of aggression in scenarios in which type of aggression and perpetrator and target gender were varied. As predicted, relational aggression by female characters and physical aggression by male characters were rated as less acceptable and more aggressive/harmful than the same behavior by the other gender. Thus, expectations regarding the gender-appropriateness of aggression appear to affect perceptions of such acts. Despite popular conceptions that females use and are harmed by relational aggression more than males, there was no gender difference in experience with relational aggression, nor were female targets viewed as more harmed by such aggression than their male counterparts.     

On the nature and development of conditional reasoning in early adolescence

Two studies investigated the conditional reasoning capabilities of eighth grade learners. In Study 1, we analysed conditional reasoning performances for differences in learners' abilities to solve problems correctly and propensities to be tricked into responding to problems in a biconditional manner. There seemed to be a developmental progression in conditional reasoning ability. Most young adolescents reason using memory of domain-specific memories. However, pragmatic inferential rules may serve as an intermediate level of abstration in reasoners as they progress from the ability to reason using only domain-specific experience to the ability to use content-free syntactic rules. In addition, correlation between scores on the Test of Logical Thinking and conditional reasoning performances suggested that ability to reason deductively using inferential rules at progressively higher levels of abstraction is related to cognitive development. In Study 2, we assessed the effectiveness of an instructional application of pragmatic inferential rule theory for development of conditional reasoning abilities. Pragmatic reasoning skill was developed throug engagement in Prolog programming activities involving hierarchical knowledge domains.     

Familiarity decisions for faces presented to the left and right cerebral hemispheres

Right-handed subjects were asked to decide whether or not faces presented briefly in the RVF or in the LVF were familiar (familiar faces were those of famous people). This task avoids the need for extensive semantic processing or temporary storage involved in conventional naming or identification tasks, and thus eliminates the contribution of such factors to any observed asymmetry. The resulting finding of faster reaction times to LVF faces, with no overall visual hemifield difference in error rates, is taken to indicate a right-hemisphere superiority either in the processes used to construct facial representations or in the accessing of face recognition units, or both.     

Do anxious parents interpretive biases towards threat extend into their child's environment?

Anxiety disorders are known to run in families [Turner, S. M., Beidel, D. C., & Costello, A. (1987). Psychopathology in the offspring of anxiety disorder patients. Journal of Consulting and Clinical Psychology, 55(2), 229–235] and environmental factors may largely account for the concordance between parental and child anxieties. Cognitive psychology models emphasise the importance of interpretive biases towards threat in the maintenance of anxiety and it is well established that anxious adults and children display similar interpretive biases and that these biases in anxious parents and their children are correlated. This raises the question of whether anxious cognitions/cognitive style may be transmitted from parent to child. We propose that this is more likely if anxious parents demonstrate interpretive biases not only about potential threats in their own environment but also about potential threats in their child's environment. Forty parents completed a recognition memory measure of interpretation bias adapted from Eysenck, Mogg, May, Richards, and Mathews (1991) [Bias in interpretation of ambiguous sentences related to threat in anxiety. Journal of Abnormal Psychology, 100(2), 144–150] to measure biases in response to potentially threat provoking situations involving themselves and their child. The interpretive biases demonstrated by parents were similar across situations involving themselves and their children. As expected, parental interpretive biases were further modified by anxiety with higher levels of parental anxiety associated with more negative interpretive biases about situations in their own and their child's environment, although this association was significantly stronger for potentially threat provoking situations in their own environment. These results are consistent with parent's interpretive biases extending beyond their own environment into their child's environment, although future research should continue to consider the mechanisms by which anxious parents may transmit fear cognitions to their children.