Perspectives on Psychology and Law

The past decade saw an explosive growth in psychological research on law (particularly the judicial process) that continues unabated. This article presents an intellectual history of this research and a critical assessment of its contemporary developments. It begins by tracing four stages in the relations between psychology and law that serve to place present scholarship in perspective. Then follow two sections consisting of conceptual, methodological, and jurisprudential critiques of two topics, respectively, that traditionally have been and still remain at the center of research attention: the pretrial phase of the criminal process (eyewitness identifications) and the criminal trial itself (jury selection, jury decision making, and presentations of evidence and law to the jury). Finally, some themes are culled from past and present experience that capture the mood, difficulties, and prospects of applying psychology to the law. The purpose of this theoretical overview of the field is to suggest some insights into two recurrent questions: why has psychological research not had more of an impact on the judicial process, and what can be done about it?     

Meta-Analysis of the Effects of Computerized Cognitive Training on Executive Functions: a Cross-Disciplinary Taxonomy for Classifying Outcome Cognitive Factors

The growing prevalence of neurodegenerative disorders associated with aging and cognitive decline has generated increasing cross-disciplinary interest in non-pharmacological interventions, such as computerized cognitive training (CCT), which may prevent or slow cognitive decline. However, inconsistent findings across meta-analytic reviews in the field suggest a lack of cross-disciplinary consensus and on-going debate regarding the benefits of CCT. We posit that a contributing factor is the lack of a theoretically-based taxonomy of constructs and representative tasks typically used. An integration of the Cattell-Horn-Carroll (CHC) taxonomy of broad and narrow cognitive factors and the Miyake unity-diversity theory of executive functions (EF) is proposed (CHC-M) as an attempt to clarify this issue through representing and integrating the disciplines contributing to CCT research. The present study assessed the utility of this taxonomy by reanalyzing the Lampit et al. (2014) meta-analysis of CCT in healthy older adults using the CHC-M framework. Results suggest that: 1) substantively different statistical effects are observed when CHC-M is applied to the Lampit et al. meta-analytic review, leading to importantly different interpretations of the data; 2) typically-used classification practices conflate Executive Function (EF) tasks with fluid reasoning (Gf) and retrieval fluency (Gr), and Attention with sensory perception; and 3) there is theoretical and practical advantage in differentiating attention and working-memory tasks into the narrow shifting, inhibition, and updating EF domains. Implications for clinical practice, particularly for our understanding of EF are discussed.     

ROLE PERCEPTIONS IN PERU1

Perception des râles au Pérou. — Le Différentiateur de Rôle (RD) a été utilisé pour étudier comment les Péruviens (N = 161) perçoivent les rôles. Les analyses factorielles font apparaître cinq facteurs de comportement identiques pour chacune des deux formes de l'instrument qui ont été utilisées. Une analyse factorielle (two-mode factor analysis) à 6 types de sujets pour chacune des deux formes, mais il n'y a pas de différences majeures dans les structures de réponses par rapport aux facteurs de comportement. Les échantillons sont supposés provenir de la même population. Les résultats sont cohérents avec l'hypothèse selon laquelle des normes de conduite clairement définies sont liées aux différences dans le statut social des paires de rôles qui reflètent le caractère hiérarchique de la société. l'hypothèse d'une invariance interculturelle de la structure factorielle des normes de conduite est confirmée. Les AA. résument brièvement les différences essentielles qui apparaissent dans la perception des rôles chez les Américains, les Grecs et les Péruviens.     

Building and using a social network: nurture for low-income Chinese American adolescents' learning

Little research has examined how low-income Asian American children are supported to achieve well in school. The authors used the notion of social capital to study higher versus lower achieving Chinese adolescents from low-income backgrounds. They found that families of higher-achieving adolescents built and used more effectively three kinds of social networks in lieu of direct parental involvement: (a) designating a helper in and outside the home for the child, (b) identifying peer models for the child to emulate, and (c) involving extended kin to guide the child jointly. These forms of social capital reflect Chinese cultural values applied to the challenges of immigrant adaptation.     

Constant errors occur in matched reproduction of angles even when likely biases are eliminated

The literature on the reproduction of visually perceived angles often seems to contain an explicit or implicit assumption that systematic errors are caused by misperception of the sizes of the angles. We argue that in the absence of procedural artifacts no consistent error should arise from purely perceptual causes. Accordingly, an experimental procedure was designed to eliminate or evaluate a number of artifacts that probably affected earlier experiments. A computer-controlled display generated both a standard angle and a variable one that could be adjusted by a subject to match the standard. The data analysis followed Cox’s (1970) procedure for the analysis of binary data to focus on the numbers of positive and negative errors rather than on their magnitudes and so eliminate the numerically distorting effects of asymmetrical error distributions. Nevertheless, the results showed what has usually been reported before: acute angles were matched with too large a comparison angle, and obtuse ones with too small an angle. Thus, there is a real effect to be explained, although the explanation must invoke response processes.