A geometrical analysis of the unfolding model: General solutions

Given the complete setR of rank orders obtained from any configuration ofn stimulus points inr dimensions in accordance with the unfolding model, a configuration from which just these orders may be derived will be described as a solution forR. The space is assumed to be Euclidean. Necessary and sufficient conditions are derived for a configuration to be a solution forR. The geometrical constraints which are necessary and sufficient to determine the subset of pairs of orders and opposites contained inR are also identified and constitute the constraint system for the ordinal vector model. The relationship between the two models is discussed.     

Effect of eye movements on backward masking and perceived location

A typical trial of this masking experiment involves, in quick succession, presentation of five letters, evocation of an eye movement, and presentation of a spatially localized mask, either a visual-pattern mask or a metacontrast ring. The effect of the mask is to sappress the report of the letter that stimulates the same retinal location, even though the mask appears to cover or surround the letter whose position in real space it shares. Masking is. however, weaker when the eyes move than when they do not. An auxiliary experiment suggests that the spatial aspects of observable (reportable by S) stimulus persistence are unaffected by eye movements, and therefore that observable persistence differs from that susceptible to masking.     

A rapid automatic technique for generating operant key-press behavior in rats

Experimentally naive rats were trained to key press on a fixed-ratio 10 schedule of food reinforcement by a completely automatic procedure within a single, 1-hr session. Control procedures demonstrated that the resulting behavior was an operant, under control of the schedule of reinforcement and the specified reinforcing stimulus (food). A simple, combination food-tray operandum, also described, was used as the basis for the training technique.     

Screening for Significant Behavior Problems in Diverse Young Children Living in Poverty

The development and use of first line screening instruments is an essential first step in assessing behavior disorders in very young children. The Early Childhood Behavior Screen (ECBS) is a parent-report measure for behavior disorders and is normed on young children (1–5 years old) living in poverty. The current study presents psychometric support for the discriminative validity of the ECBS’s 10-item Challenging Behavior Scale (CBS) as a first-line screener for externalizing behavior problems for preschool aged-children in poverty. The study’s sample included 673 participants (M age years = 2.81; 63.2 % male; 65.8 % African American) that all met the federal definitional standard for living in poverty. A confirmatory factor analysis was run to provide support for the ECBS factor structure. Receiver operating characteristics (ROC) curve analyses were used to test the CBS’s ability to distinguish between 428 clinic-referred children and 245 non-clinic-referred children. Results showed an acceptable fit model for the ECBS, providing further evidence of its construct validity. Optimal cut-scores by child age derived from the ROC curve analyses were provided with corresponding levels of sensitivity, specificity, and positive and negative predictive values. Sensitivity rates for cut scores ranged from 0.76 to 0.83 and specificity rates ranged from 0.88 to 0.95. Acceptable test–retest reliability and good internal consistency also was observed. The CBS quickly identifies young children from low-income, urban, diverse populations that may be at-risk for developing significant behavior disorders and should be considered by health care professionals who work with very young children.     

The neurodynamics of emotion: delineating typical and atypical emotional processes during adolescence

The study of development is, in and of itself, the study of change over time, but emotions, particularly emotional reactivity and emotional regulation, also unfold over time, albeit over briefer time‐scales. Adolescence is a period of development characterized by marked changes in emotional processes and rewiring of the underlying neural circuitry, making this time of life formative. Yet this period is also a time of increased risk for anxiety and mood disorders. Changes in the temporal dynamics of emotional processes (e.g. magnitude, time‐to‐peak and duration) occur during this developmental period and have been associated with risk for mood and anxiety disorders. In this article, we describe how the temporal dynamics of emotions change during adolescence and how they may increase risk for these psychopathologies. We highlight studies that illustrate how formalizing temporal neurodynamics of emotion may enhance links among levels of analyses from neurobiological to real‐world, moment‐to‐moment experiences.     

Candidate Voice Pitch Influences Election Outcomes

A growing literature in psychology shows that human voice pitch—perceived “highness” or “lowness” as determined by the physiology of the throat—influences how speakers are perceived. This leads to the prediction that candidate voice pitch influences voters. Here this question is addressed with two studies. The first is an experiment conducted with a large national sample of U.S. adults. The results show that men and women prefer to vote for male and female candidates with lower pitched voices. The second study examines the outcomes of the 2012 U.S. House elections. When facing male opponents, candidates with lower voices won a larger vote share. However, when facing female opponents, candidates with higher voices were more successful and particularly so in the case of male candidates. In synthesizing research on the human voice and voter behavior and triangulating evidence from a controlled experiment and a large observational study of actual elections, this article illustrates that candidate voice pitch influences election outcomes.     

Psychology Internships in the Treatment of Severe Mental Illness: Implications for Training in Academic Medical Centers

Despite an increasing focus over the past 2 decades by federal and state governments on the care of persons with severe mental illness, psychologists remain underrepresented among behavioral health professionals working with this population. Within the discipline there is growing concern about the need to adequately train, recruit, and retain psychologists in this specialty. This is a particular concern in academic medical settings where the overall severity of illness among those receiving psychiatric services continues to increase. The purpose of this qualitative research study was to intensively examine the experience of predoctoral interns engaged in treating individuals with severe mental illness in an academic medical center in order to identify the professional developmental experiences and training needs of those learning to care for this population. This analysis, conducted with semistructured interviews at four points during the internship year, yielded a series of recommendations for improving internship training and recruiting psychologists to this specialty.