Past experience influences object representation in working memory

The nature of object representation in working memory is vital to establishing the capacity of working memory, which in turn shapes the limits of visual cognition and awareness. Although current theories discuss whether representations in working memory are feature-based or object-based, no theory has considered the role of past experience. However, work with humans and non-human primates suggests that once participants learn which features are important for category membership, these diagnostic features become more salient than non-diagnostic features in long-term memory and object recognition. Critically, the brain areas involved in this diagnosticity effect are also recruited during working memory tasks. We report two experiments testing whether a diagnosticity effect exists in working memory; and whether it is present when visual information is encoded into working memory, or if it is the result of maintenance within working memory. Results showed a diagnosticity effect which was present at encoding. Maintenance did not influence the nature of object representation in working memory. These findings show that the meaning we glean from our past experience has a profound influence on the nature of object representation in working memory.     

Confirmatory factor structure and measurement invariance of the Memory Compensation Questionnaire

Recent research with the Memory Compensation Questionnaire (MCQ) has examined changes, functions, and correlates of compensatory strategy use in older adults. The twofold aim of this study was to test (a) the hypothesized structure of the MCQ and (b) structural equivalence across age, gender, and time. The 7-scale MCQ was designed to measure 5 compensatory mechanisms and 2 general aspects of compensatory awareness. The authors assembled a 3-wave (6-year) sample (N = 521; age = 55-85 years) from the Victoria Longitudinal Study. The results of structural equation modeling supported (a) the a priori structure of the MCQ and (b) the inference of measurement invariance across the 3 dimensions. Accordingly, the MCQ is available for measuring self-reported efforts to compensate for everyday memory losses.     

Optimal choice of rater terms I: Theory

How can an investigator choose a good team of raters to use for measuring a continuous variable when each available rater produces only dichotomous responses? We formulate an underlying model, define an index of goodness for rater teams in terms of average mean square error of the estimate, develop a new estimator and derive the optimal rater terms. The optimal raters have characteristic curves which are linear in form and satisfy the requirements for a Guttman scale.     

TouchStat: A Monte Carlo program for calculating sequential touching probabilities

A growing number of child cognition researchers are using an object-manipulation, sequential-touching paradigm to explore young children’s conceptual abilities. Within this paradigm, it is essential to distinguish children’s intracategory touching sequences from those expected by chance. The sequentialtouching approach is congruent with a permutation testing model of statistical inference and is best modeled by sampled permutations as derived from Monte Carlo procedures. In this article, we introduce a computer program for generating Monte Carlo sequential-touching simulations. TouchStat permits users to determine their own specifications to simulate sequential touching to category exemplars across a wide range of task parameters. We also present Monte Carlo chance probabilities for the standard two-category, four-exemplar task, with sequences up to 30 touches long. Finally, we consider broader applications of the TouchStat program.     

Perspectives on international collaboration in sales research

Abstract

International research collaboration and co-authorship among scholars is always encouraged, yet it comes with its share of difficulties. While globalization brings its own challenges in sales, this special issue focuses on the challenges of fostering international collaboration in sales research. Such perspective is important in today’s academic context for three main reasons. First, international collaboration in research forces scholars to take an international perspective on research problems and thus consider fields of study that may transcend cultural boundaries. Second, with international research collaboration indubitably comes broader exchanges of ideas. Having a breadth of perspectives is at the very essence of scholastic work. Third, international research collaborations can drive intellectual communities to embrace important global challenges confronting modern sales organizations.     

Board Certification in Psychology: Insights from Medicine and Hospital Psychology

For physicians board certification is an accepted tradition that research suggests improves services and outcomes. In contrast, relatively few psychologists pursue board certification suggesting ambivalence or limited contingencies reinforcing it. The authors report on medical school and hospital-based psychologists’ attitudes toward board certification and current certification status. About one-fifth (21.7%) of the sample were certified by the American Board of Professional Psychology, a greater proportion than psychologists generally: Highest rates were seen in neuropsychology (7.5%), clinical psychology (6.4%), clinical child and adolescent psychology (3.2%) and clinical health psychology (2.8%). Few (<2%) reported their hospitals required board certification. Half recognized benefits to the profession for psychologists pursuing board certification, yet 70% opposed requiring it for their hospital-based practice. Forces seeking to promote healthcare quality ultimately may increase expectations for board certification. If consumers, employers, hospitals and managed care organizations demand board certification for health professionals, greater numbers of psychologists would likely seek it.     

BEHAVIORAL TREATMENT FOR PATHOLOGICAL GAMBLING IN PERSONS WITH ACQUIRED BRAIN INJURY

The present investigation examined a behavior‐analytic clinical treatment package designed to reduce the pathological gambling of 3 individuals with acquired brain injury. A prior history of pathological gambling of each patient was assessed via caregiver report, psychological testing, and direct observation of gambling behavior. Using an 8‐week one‐on‐one client—patient format, a treatment program was developed in which the patient learned about the antecedents, consequences, and motivating operations that controlled the emission of gambling behavior. Data were collected on both self‐report of gambling urges and behavior following therapy and during in situ gambling opportunities. The therapy program reduced urges to gamble and actual gambling for all patients. The potential of behavior‐analytic therapy for reducing the pathological gambling of patients with and without brain injury is discussed.