Graham F. Wagstaff

The cognitive interview: A survey of its forensic effectiveness

Abstract The cognitive interview has been shown to have the potential to enhance witness recall. Consequently, it has been adopted by all police forces in England and Wales. The present paper surveyed 96 police officers trained in the cognitive interview and 65 untrained police officers, using a questionnaire. Officers rated how frequently they used and how useful they found components of the cognitive interview. Trained officers were significantly more likely to use instructions to mentally reinstate context, use different orders, change perspectives and imagery. Amongst trained officers there was a consensus that some components of the cognitive interview were used more frequently and were believed to be more useful than others. Rated as most useful and most frequently used were establish rapport, report everything, encourage concentration, witness compatible questioning, and mental reinstatement of context. Rated as less useful and less frequently used were recall in different orders, imagery, change p...

Self-reported psychopathology in polydrug users

There is a large body of work investigating concurrent associations between polysubstance use and psychopathology, but much of this work has either pre-dated or failed to account for the complex and culturally specific patterns of contemporary drug use. In particular, attendees of dance music events report a greater drug history than their peers and engage in a unique lifestyle. To further investigate the consequences of this type of drug use, 100 subjects who regularly attended dance music events were administered a battery of self-report psychiatric symptom scales. This battery contained the Anxiety Sensitivity Index, the Beck Anxiety Inventory (BAI), the Center for Epidemiologic Studies Depression scale (CES-D), the Dissociative Experiences Scale, the Padua Inventory Revised and additional questions about substance use. Our study population included abstainers and drug users with a wide history of use. We demonstrated strong associations between use of many different drugs, suggesting that polydrug use is the norm in this type of population. We found weak, but statistically significant, correlations between use of alcohol (p < 0.05), amphetamine (p < 0.01) and ecstasy (p < 0.01) with self-reported score on the BAI. There were also positive associations between dissociative symptomatology and the use of amphetamine (p < 0.05) and cocaine (p < 0.05). Furthermore, weekly unit intake of alcohol positively correlated with score on the CES-D (p < 0.05). As polydrug use was the norm in this sample, we performed regression analysis to investigate the contribution of multiple drug use on self-report. This showed that weekly use of alcohol, and frequency of use of amyl nitrate and cigarettes were significant predictors of BAI score. However, the majority of subjects reported being unworried by these symptoms, which may represent a lack of self-awareness, or acceptance of them as the subacute effects of substance use. It remains to be determined at what point adverse effects of drug use begin to interfere with day-to-day life.

Facilitating Memory with Hypnosis, Focused Meditation, and Eye Closure

Three experiments examined some features of hypnotic induction that might be useful in the development of brief memory-facilitation procedures. The first involved a hypnosis procedure designed to facilitate face identification; the second employed a brief, focused-meditation (FM) procedure, with and without eye closure, designed to facilitate memory for an emotional event. The third experiment was a check for simple motivation and expectancy effects. Limited facilitation effects were found for hypnosis, but these were accompanied by increased confidence in incorrect responses. However, eye closure and FM were effective in facilitating free recall of an event without an increase in errors. FM reduced phonemic fluency, suggesting that the effectiveness of FM was not due to simple changes in expectancy or motivation.

Tolerance of uncertainty, extroversion, neuroticism and attitudes to randomized controlled trials among surgeons and physicians

Surgeons have a reputation for decisiveness and self‐confidence, which suggests that they may tolerate uncertainty poorly and therefore be less capable than other doctors of experiencing clinical equipoise. Their ‘typical’ behaviour is characteristic of the stable extrovert personality and so they may prefer spontaneous clinical judgement over randomized trials. The aim of this study was to compare personality dimensions and tolerance of uncertainty among surgeons and hospital physicians, to determine whether differences in either property might help to explain the apparently poor performance of surgeons in conducting randomized controlled trials.

Equity, equality, and need: Three principles of justice or one? An analysis of “equity as desert”

Contemporary reviews of the psychology of distributive justice have tended to emphasize three main allocation principles, equity, equality, and need, and to propose that each operates within a specific sphere of influence. However, results in this area are not entirely consistent, and do not tie in readily with work on attributions of responsibility. This article reviews research into this issue and attempts to encorporate the three principles, together with the notion of causal responsibility, with a single compound equity principle, labelled “equity as desert” (EAD), based on traditional historical and philosophical conceptions of proportional desert. Two empirical studies are reported in support of this idea. The author argues that a compound equity principle of the kind proposed here may be able to provide a unifying theme in an otherwise fragmented area.

Stoicism: Its Relation to Gender, Attitudes Toward Poverty, and Reactions to Emotive Material

A scale was developed to test the hypotheses that stoicism would be more prevalent in British men (n = 30) than in British women (n = 32) and that stoicism would be related to negative attitudes toward the poor. It was also hypothesized that stoics would exhibit a weaker emotional reaction to stories that had emotive content. All three hypotheses were supported. There was evidence that the Stoicism Scale had internal consistency and some external validity.

The influence of courtroom questioning style on actual and perceived eyewitness confidence and accuracy

Purpose. Little research has been conducted on the effects of courtroom examination/questioning styles on witness confidence and accuracy. Two studies were therefore conducted, one investigating the effects of examination style on witness confidence and accuracy, the other investigating observers/jurors perceptions of witness confidence and accuracy. Method. In Study 1, after observing a video event, 60 witnesses were individually interviewed about the event according to one of three conditions: (1) simple questioning style, (2) lawyerese questioning style (containing leading and suppositional phrases), and (3) lawyerese with negative feedback style. In study 2, 60 observers/ jurors observed a good and a poor witness under examination by one of the three questioning styles. Measures of the perceived fairness of the examination were also taken in study 2. Results. In the main, significant results were found only for question items classed as difficult to remember. The lawyerese style appeared to have an adverse affect on confidence-accuracy relationships. Adding subtle negative feedback reduced the problem, but at the price of reduced overall accuracy. Observers (jurors) also seemed to be most affected by observing the negative feedback style; judging the witness overall to be less accurate. An unexpected result was that, regardless of questioning style, presenting the testimony of the least confident witness first appeared to spuriously boost confidence and thereby perceived accuracy, in that witnesss testimony. No significant effects were found for perceived fairness. Conclusions. In general, these results lend some support to those who have asserted that the lawyerese style of questioning may be unwise.

Cognitive correlates of functional and dysfunctional impulsivity

Abstract According to Dickman (1990), functional impulsivity (measured by the Dickman Impulsivity Inventory) is associated with rapid error-prone processing on a cognitive matching task, whereas dysfunctional impulsives (classified according to responses on the same inventory) are not distinguishable from non-impulsives in terms of information processing style. The present study tested the hypotheses that whereas functional impulsivity is associated with a rapid information processing style, dysfunctional impulsivity may be associated with an inability to inhibit competing responses, as measured by the Stroop colour-word interference task. The results of step-wise multiple regression analyses supported the hypotheses. Functional impulsivity was the only significant predictor of reaction times on both a Stroop task and a control colour-word matching task, whereas dysfunctional impulsivity was the only significant predictor of errors on a Stroop task. Dysfunctional impulsivity did not predict errors on the control task. The results suggest that functional and dysfunctional impulsivity may have different underlying cognitive concomitants.

Some cognitive and neuropsychological aspects of social inhibition and facilitation

Tasks that, in the working memory and neuropsychological literature, have been related to executive and frontal processing, and nonexecutive and more posterior brain processing, bear distinct similarities with the kinds of tasks that, in the social psychological literature, have been associated with social inhibition and facilitation, respectively. Accordingly, a cognitive-neuropsychological model of social inhibition and facilitation is proposed whereby the presence of others engages the executive and frontal systems, and facilitates the function of systems active in more automatic, nonexecutive processing. In two experiments, the tasks most associated with executive and frontal processing (phonemic switches and answers to complex questions) showed evidence of social inhibition, whereas those more associated with nonexecutive and more posterior temporal processing (phonemic clusters and confidence–accuracy correlations), showed some evidence of social facilitation. Implications are discussed.

Why Do the Police Interview Eyewitnesses? Interview Objectives and the Evaluation of Eyewitness Performance

Abstract Although researchers have investigated factors that may influence the information that eyewitnesses provide, little attempt has been made to relate the information that an eyewitness provides to information that the police require. Therefore, researchers may be evaluating eyewitness performance simplistically. In this article, the argument that researchers investigating eyewitness performance should consider police requirements when evaluating the quality of information eyewitnesses provide is asserted. These requirements are (a) to discover whether a crime has been committed and if so, what crime; (b) to find evidence to identify the individual responsible; (c) to produce evidence that prevents a guilty criminal from using an inappropriate defense; and (d) to determine whether the eyewitness is telling the truth.