Scaling reward value with demand curves versus preference tests

In Experiment 1, six capuchins lifted a weight during a 10-min session to receive a food piece. Across conditions, the weight was increased across six different amounts for three different food types. The number of food pieces obtained as a function of the weight lifted was fitted by a demand equation that is hypothesized to quantify food value. For most subjects, this analysis showed that the three food types differed little in value. In Experiment 2, these monkeys were given pairwise choices among these food types. In 13 of 18 comparisons, preferences at least equaled a 3-to-1 ratio; in seven comparisons, preference was absolute. There was no relation between values based on degree of preference versus values based on the demand equation. When choices in the present report were compared to similar data with these subjects from another study, between-study lability in preference emerged. This outcome contrasts with the finding in demand analysis that test–retest reliability is high. We attribute the unreliability and extreme assignment of value based on preference tests to high substitutability between foods. We suggest use of demand analysis instead of preference tests for studies that compare the values of different foods. A better strategy might be to avoid manipulating value by using different foods. Where possible, value should be manipulated by varying amounts of a single food type because, over an appropriate range, more food is consistently more valuable than less. Such an approach would be immune to problems in between-food substitutability.     

Intergenerational associations linking identity styles and processes in adolescents and their parents

Identity formation is a lifelong task, yet much research focuses on adolescence and emerging adulthood. Little is known about whether parents' identities are related to their adolescent children's identities. The present studies were designed to examine intergenerational associations. Specifically, we focused on identity styles (Study 1 with 191 mother–adolescent and 170 father–adolescent dyads) and exploration and commitment processes (Study 2 with 230 mother–adolescent and 214 father–adolescent dyads). In Study 1, the information-oriented and normative styles, especially among mothers, were positively associated with these same styles among adolescents. Fathers' use of the normative and diffuse-avoidant style was positively associated with adolescents' use of these same styles. In Study 2, parental identification with commitment was positively associated with adolescent commitment making and negatively with adolescent ruminative exploration. Maternal exploration in depth was positively associated with adolescent exploration in depth and ruminative exploration. In sum, parents may function as role models for adolescent identity formation, although longitudinal research is needed to support more authoritative claims.     

Development and psychometric evaluation of the Male Body Attitudes Scale (MBAS)

A measure of men's attitudes toward their body (MBAS) was developed and evaluated via three independent samples of college men. In Studies 1 and 2, factor analyses determined and cross-validated the MBAS's underlying structure. Three factors emerged from the items: muscularity, low body fat, and height. Studies 1 and 2 provided construct (i.e., convergent, concurrent, and discriminant) validity evidence for the MBAS total scale and subscales; they were related or not related as expected to drive for muscularity, body esteem, internalization of the muscular ideal, pressures for muscularity, pressures for thinness, self-esteem, body comparison, eating disorder symptomatology, and impression management. Study 3 revealed that the MBAS total score and subscale scores were stable over a 2-week period. The internal consistency reliabilities for the total score and subscale scores were high across all three studies. The MBAS should prove useful for researchers and clinicians interested in men's body image assessment.     

The number of distinct basic values and their structure assessed by PVQ-40

According to the theory of basic human values (Schwartz, 1992), values form a circular motivational continuum. The original publication and most subsequent research partitioned this continuum into 10 values. In theory, however, it could be partitioned into a larger number of more narrowly defined values. We use multidimensional scaling (MDS) and confirmatory factor analysis (CFA) of data from the Portrait Values Questionnaire in Poland (N = 10,439) to assess a finer partitioning of values. MDS confirmed the circular motivational continuum of 10 values, with benevolence and universalism reversing positions. CFA discriminated 15 hypothesized values: 2 subtypes of universalism (protecting the environment and societal concern), 2 of achievement (ambition and showing success), 2 of self-direction (autonomy of action and autonomy of thought), 2 of security (national security and personal security), and 2 of tradition (tradition and humility), plus stimulation, hedonism, power, conformity, and benevolence. These 15 values were also distinguishable in the MDS projection.     

Examination of Peer Rejection and Depressive Symptoms as Mediators of the Link between Rule-Breaking Behavior and Poor Academic Performance

The current study further evaluated the association between rule-breaking behavior and academic performance by examining peer rejection and depressive symptoms as potential mediators of this association. Study hypotheses were examined using a sample of 147 school-age children (54.4% male) ranging from five to 13 years of age (M = 8.22, SD = 1.99). A meditational path model was estimated, and findings suggested that peer rejection mediated the association between rule-breaking behavior and academic performance two months later when also considering the stability of academic performance. That is, high levels of rule-breaking behavior were associated with high levels of peer rejection, which in turn was associated with poor academic performance. Depressive symptoms were not indicated as a mediator of this association. Findings and their implications are discussed.     

The six most essential questions in psychiatric diagnosis: a pluralogue part 1: conceptual and definitional issues in psychiatric diagnosis

In face of the multiple controversies surrounding the DSM process in general and the development of DSM-5 in particular, we have organized a discussion around what we consider six essential questions in further work on the DSM. The six questions involve: 1) the nature of a mental disorder; 2) the definition of mental disorder; 3) the issue of whether, in the current state of psychiatric science, DSM-5 should assume a cautious, conservative posture or an assertive, transformative posture; 4) the role of pragmatic considerations in the construction of DSM-5; 5) the issue of utility of the DSM - whether DSM-III and IV have been designed more for clinicians or researchers, and how this conflict should be dealt with in the new manual; and 6) the possibility and advisability, given all the problems with DSM-III and IV, of designing a different diagnostic system. Part I of this article will take up the first two questions. With the first question, invited commentators express a range of opinion regarding the nature of psychiatric disorders, loosely divided into a realist position that the diagnostic categories represent real diseases that we can accurately name and know with our perceptual abilities, a middle, nominalist position that psychiatric disorders do exist in the real world but that our diagnostic categories are constructs that may or may not accurately represent the disorders out there, and finally a purely constructivist position that the diagnostic categories are simply constructs with no evidence of psychiatric disorders in the real world. The second question again offers a range of opinion as to how we should define a mental or psychiatric disorder, including the possibility that we should not try to formulate a definition. The general introduction, as well as the introductions and conclusions for the specific questions, are written by James Phillips, and the responses to commentaries are written by Allen Frances.     

Predictors of decision-making style among cancer patients: An empirical test of theory

Abstract

Patient decision-making has been shown to be far from data-driven which results in serious consequences for physical health and psychological well-being. Cancer patients were found to have made their medical decisions in four ways: information-seeking, information-processing, advice-following, and ruminating. These four ways represent two routes of cognitive processing. The first two exemplify central route processing and the second two exemplify peripheral route processing. Medical decisions have also been shown to be highly influencable based on message presentation. This study represents the first step in applying social influence theory to medical decision-making. The elaboration likelihood model was used to determine whether the variables shown to have influenced routes of processing could predict which decisional style the cancer patients used. Specifically, the elaboration likelihood model of Petty and Cacioppo (1986) was applied as predictors of decisional processing style. Using a discriminant function analysis, the variables motivation (both cognitive and emotional), ability to process, and cognitive responding predicted whether cancer patients made their medical decisions using the four categories of decisional styles.