A correlational analysis of tracking behavior

This study reveals the usefulness of multiple correlation techniques in estimating the relative importance of different aspects of a tracking task in the operator's tracking behavior. The technique is applied to a compensatory tracking task with a position control.The authors wish to express their appreciation of the many persons who have so generously offered encouragement and advice. Particularly helpful were S. F. George and H. Glaser of the U. S. Naval Research Laboratory and W. J. McGill of the Massachusetts Institute of Technology. The authors are also deeply indebted to Miss Jean B. Henson, who performed the many long and laborious statistical computations, for which she deserves more than this footnote.     

More than words? Hypomanic personality traits,visual imagery and verbal thought in young adults

The use of visual mental imagery has been proposed to be a risk factor for the development of bipolar disorder, due to its potential to amplify affective states. This study examined the relation between visual imagery (both trait usage and intrusive experiences of such imagery), intrusive verbal thought, and hypomania, as assessed by self-report questionnaires, in a sample of young adults (N=219). Regression analyses found (after controlling for anxiety, depression, and positive and negative affect) that levels of intrusive visual imagery predicted levels of hypomania, but that neither trait use of visual imagery nor intrusive verbal thought did. These results were consistent with the proposal that being a 'visualiser', as opposed to a 'verbaliser', is a risk factor for bipolar disorder, with the caveat that it is specifically intrusive experiences of imagery, rather than the tendency to utilize imagery per se, that acts as a risk factor.     

The role of inner and outer face parts in holistic processing: A developmental study

The effects of inner–outer feature interactions with unfamiliar faces were investigated in 6- and 10-year-old children and adults (20–30 years) to determine their contribution in holistic face vision. Participants completed a two-alternative forced-choice (2AFC) task under two conditions. The congruent condition used whole, inner-only, and outer-only stimuli. The incongruent condition used stimuli combining the inner features from one face with outer features from a novel face, or vice versa. Results yielded strong congruency effects which were moderated by pronounced feature-type asymmetries specific to developmental stage. Adults showed an inner-feature preference during congruent trials, but no asymmetry for incongruent trials. Children showed no asymmetry for congruent trials, but an outer-feature preference for incongruent trials. These findings concur with recent theoretical developments indicating that adults and children are likely to differ in the types of feature-specific information they preferentially encode in face perception, and that holistic effects are moderated differently in adults and children as a function of feature type.     

Type II twinning in devitrite,Na2Ca3Si6O16

Nanometre-scale twins found in the triclinic crystalline phase devitrite, Na₂Ca₃Si₆O₁₆, are shown to exhibit the relatively rare form of twinning, Type II twinning, in which the crystal structure of one of the parts is related to the crystal structure of the other by a rotation of 180° about η ₁?=?[1?0?0]. Although formally, the twin plane K ₁ is irrational, it is in essence (0?1?0).     

Adolescents,Risk Behaviour and Confidentiality: When Would Australian Psychologists Breach Confidentiality to Disclose Information to Parents?

The protection of confidentiality in psychological practice is vital. However, confidentiality is not absolute and psychologists are permitted to breach confidentiality under particular circumstances. Ethical challenges surrounding confidentiality are complex with adolescent clients, as assessments often consider the risk that adolescents pose to themselves in addition to the risk posed to others. The current study documented situations in which Australian psychologists would breach adolescents' confidentiality to disclose information about risk behaviour to parents, with a focus on situations where adolescents posed a risk to themselves as opposed to other people putting adolescents at risk. A total of 264 Australian psychologists were surveyed online. They were each presented with 68 variations of a vignette about a 15‐year‐old boy who was engaged in risk behaviour and were asked whether they would breach confidentiality in each case. The vignettes covered six behavioural domains (smoking, sexual behaviour, drinking, drug use, suicide, stealing) and varied in behaviour intensity, frequency and duration. Consensus was reached about breaching confidentiality in 16% of cases (related to sexual behaviour, drug use, and suicide). Consensus was reached about not breaching confidentiality in 41% of cases (relating to smoking, sexual behaviour, drug use, suicide, and stealing). In the remaining 43% of cases, significant disagreement occurred (relating to all six behavioural domains). The findings suggest a high degree of variation in opinion about confidentiality with adolescents, emphasising the importance of transparent communication and informed consent. The findings also raise questions about how important consistency of psychological practice is across Australia.     

Ethical Dilemmas of Confidentiality With Adolescent Clients: Case Studies From Psychologists

Navigating limits to confidentiality with adolescent clients can be ethically and professionally challenging. This study follows on from a previous quantitative survey of psychologists about confidentiality dilemmas with adolescents. The current study used qualitative methods to explore such dilemmas in greater depth. Twenty Australian psychologists were interviewed and asked to describe an ethically challenging past case. Cases were then used to facilitate discussion about the decision-making process and outcomes. Interviews were transcribed and analyzed using interpretive content and thematic analysis. Three key findings are discussed. First, it is of little use to perceive confidentiality dilemmas as binary choices (breach/don’t breach) because psychologists described 5 distinct options. These can be conceptualized on a spectrum of varying degrees of client autonomy, ranging from “no disclosure” (highest client autonomy) to “disclosure without the client’s knowledge or consent” (lowest client autonomy). Second, confidentiality dilemmas often involve balancing multiple and conflicting risks regarding both immediate and future harm. Third, a range of strategies are employed by psychologists to minimize potential harms when disclosing information. These are primarily aimed at maintaining the therapeutic relationship and empowering clients. These findings and the case studies described provide a valuable resource for teaching and professional development.     

Relations between symptom severity,illness perceptions,visceral sensitivity,coping strategies and well-being in irritable bowel syndrome guided by the common sense model of illness

Irritable Bowel Syndrome (IBS) is a common condition affecting around 10–20% of the population and associated with poorer psychological well-being and quality of life. The aim of the current study was to explore the efficacy of the Common Sense Model (CSM) using Structural Equation Modelling (SEM) in an IBS cohort. One hundred and thirty-one IBS patients (29 males, 102 females, mean age 38 years) participating in the IBSclinic.org.au pre-intervention assessment were included. Measures included IBS severity (Irritable Bowel Syndrome Severity Scoring System), coping patterns (Carver Brief COPE), visceral sensitivity (Visceral Sensitivity Index), illness perceptions (Brief Illness Perceptions Questionnaire), psychological distress (Depression, Anxiety and Stress Scale), and quality of life (IBS Quality of Life scale; IBS-QoL). Using SEM, a final model with an excellent fit was identified (χ² (8) = 11.91, p = .16, χ²/N = 1.49, CFI > .98, TLI > .96, SRMR < .05). Consistent with the CSM, Illness perceptions were significantly and directly influenced by IBS severity (β = .90, p < .001). Illness perceptions in turn directly influenced maladaptive coping (β = .40, p < .001) and visceral sensitivity (β = .70, p < .001). Maladaptive coping and visceral sensitivity were significantly associated with psychological distress (β = .55, p < .001; β = .22, p < .01) and IBS-QoL (β = –.28, p < .001; β = –.62, p < .001). Based on these findings, we argue that to augment the adverse impact of IBS severity on IBS-QoL and psychological distress, psychological interventions will be best to target the mediating psychological processes including illness beliefs, visceral sensitivity and maladaptive coping.     

Is Folk Psychology Different?

In this paper, I seek to refute arguments for the idea that folk psychological explanation, i.e., the explanation of actions, beliefs and desires in terms of one another, should be understood as being of a different character than ordinary scientific explanations, a view defended most prominently in analytical philosophy by Donald Davidson and John McDowell. My strategy involves arguing both against the extant arguments for the idea that FP must be construed as giving such explanations, and also against the very notion of such a different kind of explanation. I argue first that the in some sense a priori and conceptual nature of folk psychological principles does not support the idea that these are other than empirical generalisations, by appeal to recent nativist ideas in cognitive science and to Lewis's conception of the meaning of theoretical terms. Second, I argue that there is no coherent sense in which folk psychological explanations can be seen as normative. Thirdly, I examine the putatively holistic character of the mental and conclude that that too fails to provide any cogent reasons for viewing folk psychological explanations as different from other kinds of explanation.     

Anticipation skill in a real-world task: measurement,training, and transfer in tennis

Anticipation skill in tennis was examined using realistic film simulations, movement-based response measures, and a portable eye movement recording system. Skilled players were faster than their less skilled counterparts in anticipating the direction of opponents' tennis strokes, with this superior performance being based, at least in part, on more effective visual search behaviors. The processes mediating superior performance were then modeled in groups of recreational tennis players using video simulation, instruction, and feedback. Players who received perceptual training improved their performance on laboratory- and field-based tests of anticipation when compared with matched placebo and control groups that did not receive any instruction regarding expert performance strategies. The approach used may have practical utility in a variety of performance contexts.