Increasing variety of foods consumed by blending nonpreferred foods into preferred foods

A treatment with differential or noncontingent reinforcement and nonremoval of the spoon increased the acceptance of one or two of 16 foods for 2 participants with severe food refusal. These differential levels of acceptance were demonstrated empirically in an ABAB design in which A was the presentation of the accepted (preferred) foods and B was the presentation of foods the participants refused (nonpreferred foods). Subsequently, we implemented a blending treatment that consisted of mixing (blending) nonpreferred foods into preferred foods in various ratios (e.g., 10% nonpreferred/90% preferred, 20% nonpreferred/80% preferred). We then presented nonpreferred foods that had been exposed to blending to determine if consumption of nonpreferred foods would increase following the blending treatment. We also conducted periodic reversals in which we presented nonpreferred foods that had not been exposed to the blending treatment. Following initial implementation of the blending treatment, consumption was high for nonpreferred foods that had been blended and low for nonpreferred foods that had not been blended. Consumption increased for all foods (i.e., foods that had been exposed to blending and foods that had not been exposed to blending) after seven or eight foods had been exposed to the blending treatment. Thus, the variety of foods consumed by the participants increased from one or two to 16. These results are discussed in terms of stimulus fading, conditioned food preferences, and escape extinction. DESCRIPTORS: conditioned food preferences, food refusal, negative reinforcement, stimulus fading     

Psychological implications of the doctrine of Christian Perfection with special reference to John Wesley's view

The doctrine of Christian Perfection is viewed by some as a wonderful and liberating doctrine, but by others it is seen as producing false expectations and guilt. John Wesley, the first major theologian to develop a theology of Christian Perfection, encountered misunderstandings and problems with this doctrine. He wrote and preached to correct the misunderstandings. Unfortunately, misunderstandings persist and sometimes have psychological effects on individuals. This article explores common understandings, beliefs, and experiences regarding Christian Perfection among evangelical Christians from the holiness tradition. The material was gathered by means of interviews that were recorded. The interviews were then studied by a theologian and by a clinical psychologist in order to examine how close the beliefs were to Wesley's position and what psychological implications were contained in both the beliefs and the experiences related to the belief of those interviewed.     

Stammering and therapy views of people who stammer

This study used a postal questionnaire to seek the views of adults who stammer concerning the effect of stammering on their lives, the speech and language therapy and other remedies they have tried, and their hopes for speech and language therapy in the future. The 332 returned questionnaires indicated that stammering had the greatest adverse effect on school life and occupation. Speech and language therapy had been helpful to many, but the nature of the benefits and specific therapies used were not cited in many responses. An emergent theme in unhelpful therapy was the dissatisfaction that arises when individual needs are not met. In the future, people want help in controlling stammering and in developing coping strategies. The desire for timely and effective therapy for children, ongoing help and for group or intensive work has implications for service organization and therapist's skills. The survey highlights the need for therapists and clients to negotiate therapy aims and procedures that are clearly defined, appropriate to individual needs, achievable, and, if possible, recorded and measured. EDUCATIONAL OBJECTIVES: The reader will learn about and be able to list (1) the areas most and least affected by stammering, (2) the therapy approaches respondents had found helpful, and (3) other remedies that tried to help stammering.     

Artificial life and Piaget

Artificial life provides important theoretical and methodological tools for the investigation of Piaget's developmental theory. This new method uses artificial neural networks to simulate living phenomena in a computer. A recent study by Parisi and Schlesinger suggests that artificial life might reinvigorate the Piagetian framework. We contrast artificial life with traditional cognitivist approaches, discuss the role of innateness in development, and examine the relation between physiological and psychological explanations of intelligent behaviour.