DIFFERENTIAL REINFORCEMENT OF CORRECT RESPONSES TO PROBES AND PROMPTS IN PICTURE-NAME TRAINING WITH SEVERELY RETARDED CHILDREN

A systematic sequence of prompt and probe trials was used to teach picture names to three severely retarded children. On prompt trials the experimenter presented a picture and said the picture name for the child to imitate; on probe trials the experimenter did not name the picture. A procedure whereby correct responses to prompts and probes were nondifferentially reinforced was compared with procedures whereby correct responses to prompts and probes were differentially reinforced according to separate and independent schedules of primary reinforcement. In Phase 1, correct responses to prompts and probes were reinforced nondifferentially on a fixed ratio (FR) 6 or 8 schedule; in Phase 2, correct responses to prompts were reinforced on the FR schedule and correct responses to probes were reinforced on an FR schedule of the same value; in Phase 3, correct responses to prompts were reinforced on the FR schedule and correct responses to probes were reinforced on a continuous reinforcement (CRF; every correct response reinforced) schedule; in Phase 4, correct responses to prompts were reinforced on a CRF schedule and correct responses to probes were reinforced on the FR schedule; in Phase 5, a reversal to the conditions of Phase 3 was conducted. For all three children, the FR schedule for correct responses to prompts combined with the CRF schedule for correct responses to probes (Phases 3 and 5) generated the highest number of correct responses to probes, the highest accuracy (correct responses relative to correct responses plus errors) on probe trials, and the highest rate of learning to name pictures.     

Teaching chained skills in a non-school setting using a divided half instructional format

This investigation evaluated the use of dyadic instructional arrangements in teaching chained skills to four students with moderate mental retardation. Each instructional dyad consisted of two students. Each of the three cooking skills was divided into two equal parts, and each student in a dyad received direct instruction on one part of the task analysis during each instructional session. During the following session, the two parts were reversed and a student received instruction on the second part. A constant time delay procedure was used to teach the targeted skills in an off-campus setting. A multiple probe design across skills and replicated across students evaluated the effectiveness of the instructional procedure and teaching arrangement. Results indicate that each of the four students learned the three cooking skills. Implications for future research are discussed.     

Evaluating the “possums” health professional training in parent–infant sleep

Infant sleep problems are among the most common issues reported by parents in the postnatal period. Yet, infant sleep and infant sleep interventions remain controversial. This study evaluated health professional training in a novel approach to parent–infant sleep: the Possums Sleep Intervention. Health professionals (n = 144) completed a short survey before and after the training, which focused on the sleep component. The Possums Sleep Intervention training included the following topics: sleep science, cued care, sleep hygiene, relaxation for parents and babies, problem solving, and acceptance and commitment therapy (ACT). Health professionals reported: improvements in knowledge on infant sleep regulation, the mother–infant relationship and ACT; improvements in health professionals’ own sleep quality; improvements in psychological flexibility; and a reduction in professional burnout and secondary traumatic stress. Moreover, the health professional training was received positively. Overall, this study is supportive of the Possums Sleep Intervention health professional training.     

Assessing text representations with recognition: The interaction of domain knowledge and text coherence

Readers construct at least 2 interrelated mental representations when they comprehend a text: a textbase and a situation model. Two experiments were conducted with recognition memory to examine how domain knowledge and text coherence influence readers' textbase and situation-model representations. In Experiment 1, participants made remember-know judgments to text ideas. Knowledge and coherence interacted to influence remember judgments differently than know judgments. In Experiment 2, the authors used the process-dissociation procedure to obtain recollection and familiarity estimates. Knowledge and coherence interacted to influence recollection estimates but not familiarity estimates. The authors claim that recollection and familiarity can be used as markers of the different processes involved in constructing a textbase and a situation model.     

Changing perspectives on the benefits of newborn screening

The likelihood of benefit is fundamental to decision making about newborn screening. But benefit is construed in different ways by different stakeholders. This article begins with a review of benefit as considered historically by various expert panels and organizations. We then show how 78 conditions fared when experts recently rated them on benefit using a scoring system recommended by a task force of the American College of Medical Genetics. Finally, we analyze how benefit is reflected in the public comments submitted in response to the ACMG report. Results show that benefit has been and remains a core consideration for screening decisions. Historically the focus has been on improved physical health as a result of medical treatment; however, in only 4 of the 78 conditions rated does newborn screening prevent all negative consequences. In fact the majority of both core conditions (51.7%) and secondary targets (87.5%) recommended in the ACMG report were rated as having treatments that prevented only some negative consequences. All conditions rated had perceived benefits for family and society, but currently no conditions are screened on the basis of family or societal benefits alone. No agreed-upon threshold exists for what would be considered meaningful benefit, and stakeholder groups differ in their perceptions of benefit. We conclude by suggesting several key research studies needed to further inform public policy.     

Evaluating the validity of anger regulation problems, interpersonal style, and disturbed mental state for predicting inpatient violence

Research has been conducted to try to identify risk factors to help predict which patients will be violent during psychiatric hospitalization. Despite the relatively large amount of research conducted, it is difficult to draw any firm conclusions, as the studies vary considerably in study design, methods used, and choice of outcome measures. Studies also tend to focus on risk prediction, even though risk management is the primary aim of clinical practice in mental health services and few studies have focused on a theoretical basis for understanding violence. This study assessed the predictive validity of brief assessment scales in a sample of 94 forensic inpatients who had been inpatient for a median of 521 days, to test the hypotheses that anger regulation problems, interpersonal style, and disturbed mental state would be linked to increased violence risk in a forensic hospital during a hospital stay. The outcome variables for this study were physical violence against another and/or clear threats of physical violence. The results of this study provide support for the hypotheses, and this remained the case after controlling for age, gender, length of stay, and presence of major mental disorder. The findings should not only assist clinicians with assessment and management of risk but also support the reconceptualizing of risk prediction research to reflect the task of clinical risk management.     

The propositional structure of discourse in the two cerebral hemispheres

Readers construct at least two interrelated representations when they comprehend a text: (a) a representation of the explicit ideas in a text and the relations among them (i.e., a propositional representation) and (b) a representation of the context or situation to which a text refers (i.e., a discourse model). In a recent study, found evidence that readers' representations were structured according to propositional relations, but only in the left hemisphere. Both hemispheres, however, appeared to represent contextually relevant semantic information. The goal in the current study was to examine further the organization of explicit text concepts in the two hemispheres. We used an item-priming-in-recognition paradigm in combination with a lateralized visual-field manipulation. We found evidence for a propositionally structured representation in the left hemisphere, that is, priming effects that reflected the linear distance between primes and targets in the propositional structure of passages. We also found that the right hemisphere represented explicit text concepts, but we found no evidence that these concepts were organized structurally. In a second experiment, we found our item priming effects reflected the representation of text information in memory and did not reflect lexical-semantic priming at test.     

Combining Employment and Breastfeeding: Utilizing a Work-Family Conflict Framework to Understand Obstacles and Solutions

Although authorities advocate breastfeeding as the ideal form of infant nutrition, breastfeeding rates remain low among employed mothers in the United States. Utilizing a work-family conflict framework, specific time-based, strain-based, and behavior-based conflicts that can occur for women combining breastfeeding and employment are explored. Research indicates that these conflicts often lead to decreased breastfeeding durations, which result in costs for employers, mothers, and infants. The review links workplace interventions (e.g. prenatal education, lactation programs, support systems, job flexibility, and child care) to the types of conflict (e.g. time, behavior, and strain-based) that each intervention can reduce. A previous version of this paper was presented in March of 2003 at the American Psychological Association’s Work, Stress, and Health Conference in Toronto, Canada.