The contextually controlled, feature-mediated classification of symbols

The classification of names of people or objects based on the features acquired by the names and the sorting instructions provided is a commonplace occurrence. For example, given the names Renoir, Pollock, James and Voltaire the average adult would be able to classify them differentially based on the instruction to classify them based on vocation or nationality. In general, such a repertoire reflects the reclassification of symbols (i.e, the names of individuals) in terms of contextual cues (instructions to sort by vocation or nationality) and the features acquired by the symbols (the specific nationalities and vocations). The present experiment studied this phenomenon with the use of arbitrary stimuli that did not have clear preexperimental associations. Two of 4 participants classified the symbols into different equivalence classes based on the prevailing contextual cues and the features that had been acquired by the symbols. Using an ABA reversal design we then demonstrated that 1 participant classified the symbols in accordance with the contextual cues and acquired features when present, but not in the absence of the contextual cues. A 3rd participant showed symbol classification that differed from that predicted by the procedures, and the 4th classified the symbols based on one set of features but not on context. These data describe one set of conditions that could account for the establishment of complex classification repertoires that occur in natural settings.     

Romanticism as a function of age, sex, and ethnicity

This study examined the association between romanticism (operationalized as mean score on the Romantic Beliefs Scale) and age, sex, and ethnicity in a large community sample (N = 436). Age was negatively correlated with romanticism scores; as age increased, romanticism scores decreased. No sex differences were found; men and women had similar, moderate scores. Although ethnicity largely was unrelated to romanticism, Asian/Pacific Islander participants were significantly more romantic than were African-American participants.     

Integrated,Family‐based,Partial Hospital Treatment for Complex Pediatric Illness

This paper describes a unique treatment program for complex pediatric illness. The Hasbro Children's Partial Hospital Program uses a family systems orientation, integrated care, and a partial hospital setting to treat children with a wide range of pediatric illnesses that have failed outpatient and inpatient treatments. We have treated more than 2000 children with at least 80 different ICD‐9 diagnoses. The multidisciplinary treatment team functions as a meta‐family for children and their families who present with illness and family beliefs that impede successful outcomes with standard care. The three features: family systems orientation, integrated care, and partial hospital setting, hopefully interact to create an environment that helps families expand and modify their explanatory models regarding participating in effective medical care. The goal of treatment is for both children and their parents to feel empowered to take control of the illness. Parents completing standardized measures at intake describe their children and families as experiencing significant emotional distress, low levels of general family functioning, and poor quality of life. Although the children are described as having distinct behavioral differences, the families are described as responding to the experience of a seriously ill child in similar ways. A treatment program that addresses the noncategorical aspects of how families respond to illness while addressing the specific diseases of the children can allow children and their families to respond favorably to treatment.     

Assessing factors that influence young children's food preferences and choices

Researchers have identified an unbalanced diet as a key risk factor in the etiology of many chronic diseases (World Health Organization, 2003 ). Although researchers have found that numerous factors influence children's food choices, no assessment exists to identify these factors. In Experiment 1, we established preliminary empirical evidence of children's preferences for healthier and less‐healthy foods, and found that 16 of 21 children preferred less‐healthy foods to healthier foods. In Experiment 2, we established the utility of an analogue, competing parameters assessment designed to approximate children's food choices in the natural environment. We identified either quality or immediacy as the most influential parameters governing four of four childrens' food choices. We found that effort influenced the efficacy of these reinforcer parameters in a predictable manner for one of four children.     

Zero-Inflated Regime-Switching Stochastic Differential Equation Models for Highly Unbalanced Multivariate,Multi-Subject Time-Series Data

Psychometrika - In the study of human dynamics, the behavior under study is often operationalized by tallying the frequencies and intensities of a collection of lower-order processes. For instance,...     

Head Coach Changes in Women’s College Soccer: An Investigation of Women Coaches Through the Lenses of Gender Stereotypes and the Glass Cliff

Sex Roles - Women are underrepresented in leadership positions in sport, including coaching. In the present study of women’s college soccer in the United States, the authors examine the...     

Ontogeny of early event memory: II. Encoding and retrieval by 2- and 3-month-olds

The ability of 2-month-old infants to discriminate changes in a 5-object crib mobile following a retention interval of 24 hr was assessed using the mobile conjugate reinforcement paradigm. Infants were trained in 3 daily 15-min sessions to produce mobile movement by footkicking. Twenty-four hr later, independent groups received generalization tests with mobiles containing 1–5 novel objects substituted into their original training mobile. A control group was tested with the original training mobile. These findings were compared with findings of 2 previous studies involving identical procedures with 3-month-olds, reanalyzed for measures of individual performance over successive test minutes. Although, in absolute terms, 2-month-olds had a flat generalization gradient relative to 3-month-olds, when each infant's kick rate during the generalization test was expressed relative to that infant's kick rate before, and at the end of, training, it was found that the generalization gradients of 2- and 3-month-olds were indistinguishable. The relative response measures indicated a surprising degree of specificity by both age groups: Test mobiles containing more than 1 novel object did not cue retrieval, but test mobiles containing no more than 1 new object yielded perfect retention and complete generalization. These data indicate that infants as young as 2 months are capable of encoding and maintaining a representation of the specific details of their training context for at least 24 hr and, after that delay, can perform fine discriminations based on the discrepancy between their test context and that representation.