Operant conditioning permits voluntary,noninvasive measurement of blood pressure in conscious,unrestrained baboons (Papio cynocephalus)

This report describes a computerized apparatus and procedure for completely automated noninvasive measurement of systolic, diastolic, and mean arterial blood pressure in conscious, unrestrained nonhuman primates. We used a specially constructed, cage-mounted oscillometric blood pressure instrument and operant reward conditioning methods to train adult baboons(Papio cynocephalus) to submit voluntarily to frequent self-initiated determinations of their blood pressures in the absence of a human operator/observer. Details concerning the operant training procedure and illustrative blood pressure data are presented. The accuracy of the method was evaluated by comparing the noninvasive blood pressure readings with simultaneously taken direct measurements obtained by means of chronically indwelling arterial catheters.     

Auditory delayed matching in the bottlenose dolphin

A bottlenose dolphin, already highly proficient in two-choice auditory discriminations, was trained over a nine-day period on auditory delayed matching-to-sample and then tested on 346 unique matching problems, as a function of the delay between the sample and test sounds. Each problem used new sounds and was from five to 10 trials long, with the same sound used as the sample for all trials of a problem. At each trial, the sample was projected underwater for 2.5 sec, followed by a delay and then by a sequence of two 2.5-sec duration test sounds. One of the test sounds matched the sample and was randomly first or second in the sequence, and randomly appeared at either a left or right speaker. Responses to the locus of the matching test sound were reinforced. Over nine, varying-sized blocks of problems, the longest delay of a set of delays in a block was progressively increased from 15 sec initially to a final value of 120 sec. There was a progressive increase across the early blocks in the percentage of correct Trial 1 responses. A ceiling-level of 100% correct responses was then attained over the final six blocks, during which there were 169 successive Trial 1 responses bracketed by two Trial 1 errors (at 24- and 120-sec delays). Performance on trials beyond the first followed a similar trend. Finally, when the sample duration was decreased to 0.2 sec or less, matching performance on Trial 1 of new problems dropped to chance levels.     

A Critical Review and Best‐Practice Recommendations for Control Variable Usage

The use of control variables plays a central role in organizational research due to practical difficulties associated with the implementation of experimental and quasi‐experimental designs. As such, we conducted an in‐depth review and content analysis of what variables, and why such variables are controlled for, in 10 of the most popular research domains (task performance, organizational citizenship behaviors, turnover, job satisfaction, organizational commitment, employee burnout, personality, leader?member exchange, organizational justice, and affect) in organizational behavior/human resource management (OB/HRM) and applied psychology. Specifically, we examined 580 articles published from 2003 to 2012 in AMJ, ASQ, JAP, JOM, and PPsych. Results indicate that, across research domains with clearly distinct theoretical bases, the overwhelming majority of the more than 3,500 controls identified in our review converge around the same simple demographic factors (i.e., gender, age, tenure), very little effort is made to explain why and how controls relate to focal variables of interest, and control variable practices have not changed much over the past decade. To address these results, we offer best‐practice recommendations in the form of a sequence of questions and subsequent steps that can be followed to make decisions on the appropriateness of including a specific control variable within a particular theoretical framework, research domain, and empirical study. Our recommendations can be used by authors as well as journal editors and reviewers to improve the transparency and appropriateness of practices regarding control variable usage.     

The great man from Tarsus: Freud on the apostle Paul

The author describes developments in Freud's writings concerning his views on the apostle Paul. This development shows that Freud more and more clearly regarded Paul as a key figure in understanding the complex relationship between Judaism and Christianity--and also as a man who essentially has no comfortable place in either of these religions. For Freud, Paul was a unique figure, an analyst of the human character and of his own culture and religion--a Jew who tried to free himself and his people from the burden of the sense of guilt.     

“Accept Me,or Else…”: Disputed Overestimation of Social Competence Predicts Increases in Proactive Aggression

It has been proposed that aggressive behavior may result from unrealistically positive self-evaluations that are disputed by others (Baumeister, Smart, & Boden, 1996). The present three studies tested this proposition concurrently and longitudinally for the domain of self-perceived social competence (SPSC) in 3-6th grade children on two continents. Each study tested whether aggressive behavior is related to general overestimation of SPSC compared to competence as perceived by peers, or to disputed overestimation, that is, overestimation disputed through rejection by peers. Specificity of relations with reactively or proactively aggressive behavior patterns was assessed and the predictive value of overestimation to the development of these types of aggressive behavior was investigated. Concurrently, disputed overestimation explained more variance in aggressive behavior than general overestimation, and was uniquely related to proactive aggression. Longitudinally, disputed overestimation also uniquely predicted changes in proactive, not reactive aggression.     

Academic Pathways between Attention Problems and Depressive Symptoms Among Urban African American Children

The present study investigated the pathways between attention problems and depressive symptoms, particularly the role of academic incompetence, among a community sample of urban African American children. Results supported the hypothesized path models from inattention to depressive symptoms for girls and boys. Academic performance in the spring of first grade mediated the relationship between inattention in fall of first grade and depressive symptoms in spring of 3rd grade. The effects held when controlling for conduct problems and academic competence in first grade suggesting the path was specific to attention problems rather than a more general externalizing or school readiness pathway. Implications for designing interventions and prevention strategies for children with attention problems and depressive symptoms are discussed.     

Research in industrial and organizational psychology from 1963 to 2007: changes, choices, and trends

The authors conducted a content analysis of all articles published in the Journal of Applied Psychology and Personnel Psychology from January 1963 to May 2007 (N = 5,780) to identify the relative attention devoted to each of 15 broad topical areas and 50 more specific subareas in the field of industrial and organizational (I-O) psychology. Results revealed that (a) some areas have become more (or less) popular over time, whereas others have not changed much, and (b) there are some lagged relationships between important societal issues that involve people and work settings (i.e., human-capital trends) and I-O psychology research that addresses them. Also, much I-O psychology research does not address human-capital trends. Extrapolating results from the past 45 years to the next decade suggests that the field of I-O psychology is not likely to become more visible or more relevant to society at large or to achieve the lofty goals it has set for itself unless researchers, practitioners, universities, and professional organizations implement significant changes. In the aggregate, the changes address the broad challenge of how to narrow the academic-practitioner divide.     

Empirically Derived Subtypes of Child Academic and Behavior Problems: Co-Occurrence and Distal Outcomes

The aim of this study was to identify classes of children at entry into first grade with different patterns of academic and behavior problems. A latent class analysis was conducted with a longitudinal community sample of 678 predominantly low-income African American children. Results identified multiple subclasses of children, including a class with co-occurring academic and behavior problems. Gender differences were found in relation to the number of identified classes and the characteristics of academic and behavior problems for children. Several of the identified classes, particularly the co-occurring academic and behavior problems subclass for both genders, predicted negative long-term outcomes in sixth grade, including academic failure, receipt of special education services, affiliation with deviant peers, suspension from school, and elevated risk for conduct problems. The finding that subclasses of academic and behavior problems predict negative long-term outcomes validates the importance of the identified classes and the need to target interventions for children presenting with the associated class characteristics. Implications for early identification, prevention, and intervention for children at risk for academic failure and disruptive behavior problems are discussed.