Physical probabilities

A conception of probability as an irreducible feature of the physical world is outlined. Propensity analyses of probability are examined and rejected as both formally and conceptually inadequate. It is argued that probability is a non-dispositional property of trial-types; probabilities are attributed to outcomes as event-types. Brier's Rule in an objectivist guise is used to forge a connection between physical and subjective probabilities. In the light of this connection there are grounds for supposing physical probability to obey some standard set of axioms. However, there is no a priori reason why this should be the case.     

Evaluation of multiple‐alternative prompts during tact training

This study compared 2 methods of fading prompts while teaching tacts to 3 individuals who had been diagnosed with autism spectrum disorder (ASD). The 1st method involved use of an echoic prompt and prompt fading. The 2nd method involved providing multiple‐alternative answers and fading by increasing the difficulty of the discrimination. An adapted alternating‐treatments design showed that both procedures were more effective than a no‐intervention control condition. Providing multiple alternatives did not increase error rates or teaching time, and better maintenance was shown for tacts taught with the multiple‐alternative prompt.     

Developmental and individual differences in visual memory span

The effects of chronological age (5+, 7+, 10+, and adult), articulatory suppression and spatial ability were assessed on three measures (recognition memory, partial recall, and free recall) of visual memory span for patterns, using a procedure devised by Wilson, Scott & Power (1987). Although span increased into adulthood for all three tasks, concurrent articulatory suppression acted to reduce span for the 10-year-old and adult subjects. The ability to generate accurate visuo-spatial representations at retrieval is perfectly well developed by 7 years of age. Speed of response was lengthened for the youngest age group, but was immune to the effects of concurrent articulatory suppression. Good spatial ability was associated with higher span estimates on all tasks, regardless of age. Whilst the data support the existence of a system for representing visual patterns, which increases in capacity with increasing chronological age, the system (or processes accessing it at retrieval) is not immune to verbal recoding strategies. The independent association of spatial ability with span is taken to imply that nonverbal encoding and/or maintenance strategies can act to boost visual span from at least 5 years of age.     

On disregarding deviants: Exemplar typicality and person perception

A pervasive problem in mental life is that of exemplar selectivity or how one isolates specific category members from other instances of a class. This problem is particupared pronounced in person perception, where perceivers may routinely want to personalize selected individuals while continuing to respond towards other members of the category in a stereotype-based manner. To realize these flexible effects, we hypothesized that, when perceivers encounter a group member, they inevitably encode an exemplar-based representation of the individual in mind. Part of this representation, moreover, is information signaling the person's goodness-of-Fit with respect to his or her salient group memberships. When the representation is activated on a subsequent occasion, these inferences of category fit moderate the extent of stereotypical thinking. The results of two studies provided converging evidence for this analysis of stereotype function. Exemplar typicality moderated both the accessibility of Stereotypic knowledge (Study 1) anxd the extent to which perceivers used a stereotype to organize information about a target (Study 2). We consider the theoretical and practical implications of these findings for our understanding of the role of stereotypes in person perception.     

Recognizing faces in and out of context

Two experiments are reported which examined the influence of context on face recognition accuracy for novel and familiar faces respectively. Context was manipulated by varying the physical background against which the faces appeared. In Experiment I, 80 student subjects observed 18 faces before attempting to recognize them in a sequence of 36 al ternatives , For half the subj ects, the backgrounds changed from study to test, while for the remainder they stayed the same. In addition, for half the subjects, both the pose and expression of the face also changed, while for the others it remained constant. Changes in pose plus expression and context significantly reduced recognition accuracy for the target faces. Experiment 11 used an identical design, except that the faces of celebrities replaced the novel faces. The influence of context was eliminated but the effects of pose and expression were maintained. However, when only faces which were actually identified by subjects were considered, the effects of pose and expression, too, were eliminated. The significance of these findings for theories of contextual memory are discussed.     

Primary prevention of psychological difficulties in vulnerable mothers: pilot programme evaluation

This pilot study evaluated a primary prevention programme delivered to mothers who were considered to be vulnerable to the development of psychological difficulties (N = 11). Beneficial effects were noted in terms of mood and coping, as well as a reduction in the mothers' attendance at their general practitioners surgery. Copyright © 2001 John Wiley & Sons, Ltd.     

Links Between Anxiety and Allergies: Psychobiological Reality or Possible Methodological Bias?

ABSTRACT The objective of the study was to examine the link between anxiety and allergies to establish whether it reflects a psychobiological reality or a possible methodological bias. A cohort of 1,037 children enrolled in the study. Anxiety disorders were assessed between 11 and 21 years. Anxious personality was assessed at 18 years. Allergies were examined at 21 years by (a) self reports, (b) skin pricks, and (c) serum total immunoglobulin E (IgE). Self-reported allergies were predicted by recurrent anxiety disorders (OR [95% CI]=1.56 [1.06–2.30], p =.023) and self-reports of anxious personality (OR [95% CI]=1.67 [1.17–2.37], p =.004): Objectively verified allergies were not. These results suggest that the link between anxiety and allergies may reflect a methodological artifact rather than a psychobiological reality.     

A modified cognitive interview procedure for frontline police investigators

The current investigative interviewing model for police officers in England and Wales recommends the use of the cognitive interview (CI). However, there is much to suggest that police officers do not regularly fully apply the procedure and that when they do, it is often poorly applied. Research has indicated that this is particularly the case with non‐specialist police investigators who believe the CI is too cumbersome, complex and time consuming for the types of witness interviews they conduct. With this in mind the present study investigated a CI procedure that had been substantially modified in an attempt to enhance its forensic practicability while retaining the demonstrated superiority of the CI. Employing the mock witness paradigm, the modified procedure was compared to both the current CI model and a structured interview (SI). Results revealed that the modified CI was more effective than the SI, while being as effective as the current CI, despite being significantly shorter in duration and, we argue, less demanding for the interviewer. Hence, the proposed modified CI may well be an effective practical alternative for frontline investigators. Copyright © 2008 John Wiley & Sons, Ltd.     

The cognitive interview: the efficacy of a modified mental reinstatement of context procedure for frontline police investigators

The current investigative interview framework for police officers in England and Wales (and many other countries) recommends the use of the cognitive interview (CI). One of the primary components of the CI is the mental reinstatement of context (MRC) instruction. However, research has consistently indicated that police officers do not regularly use this component and when they do it is often poorly applied. Thus the question arises as to whether some adjustment of the MRC component might enhance its forensic practicability. An initial investigation was conducted as to the efficacy of a more succinct and less complex MRC technique, namely a sketch plan mental reinstatement of context (Sketch MRC). Twenty‐four hours after having viewed a crime film, adult mock witnesses were interviewed employing the traditional MRC instruction, a Sketch MRC instruction or no mental reinstatement of context (No MRC). Analysis of overall memorial performance revealed the Sketch MRC to be as effective as the MRC and more effective than No MRC. Thus, for less serious crime the Sketch MRC technique may be a viable, less complex and less time consuming alternative. Copyright © 2008 John Wiley & Sons, Ltd.     

The Cutest Little Baby Face: A Hormonal Link to Sensitivity to Cuteness in Infant Faces

ABSTRACT— We used computer image manipulation to develop a test of perception of subtle gradations in cuteness between infant faces. We found that young women (19–26 years old) were more sensitive to differences in infant cuteness than were men (19–26 and 53–60 years old). Women aged 45 to 51 years performed at the level of the young women, whereas cuteness sensitivity in women aged 53 to 60 years was not different from that of men (19–26 and 53–60 years old). Because average age at menopause is 51 years in Britain, these findings suggest the possible involvement of reproductive hormones in cuteness sensitivity. Therefore, we compared cuteness discrimination in pre- and postmenopausal women matched for age and in women taking and not taking oral contraceptives (progestogen and estrogen). Premenopausal women and young women taking oral contraceptives (which raise hormone levels artificially) were more sensitive to variations of cuteness than their respective comparison groups. We suggest that cuteness sensitivity is modulated by female reproductive hormones.