Consummatory Contrast Effects in Nondeprived Rats Following Shifts in Sucrose Concentration

Successive positive and negative contrast effects in consummatory behavior were investigated following shifts in sucrose concentrations in nondeprived subjects. Forty-four male albino rats were given daily 5-min access to either a 4%- or 32%-sucrose solution across a 14-day preshift period. Subjects in each group were then assigned to either a control or shifted condition. Shifted groups were upshifted (4–32%) or downshifted (32–4%) for a 10-day postshift period. Negative contrast was apparent in both lick rate and time spent at the drinking tube across the first 4 days of postshift. Positive contrast effects were not obtained, but rather a significant effect opposite to positive contrast occurred. The improbability of the ceiling effect explanation for the present results is discussed. Differences relative to deprivation state and the role of perceptual (taste) factors in contrast effects are also examined.

     

Treating fetuses: The patient as person

The medical treatment in utero of human beings raises several ethical questions. I argue that treatment is sufficient to establish the fetus as person; and consider how conflicts between the interests of the fetus and mother are to be resolved when such treatment is proposed. My arguments rest upon a 'relational model' of ethical discourse derived from H. Richard Niebuhr's "ethics of the fitting." I conclude that the limitation of personal autonomy is rarely justified, but may be when direct, grave, harm to others is imminent; and that educative rather than punitive measures are the best prospect for protecting fetal life.     

Brief assessment and treatment of pica using differential reinforcement,response interruption and redirection,and competing stimuli

Pica is a life threating form of challenging behavior displayed by individuals with intellectual and developmental disabilities. In most cases, pica is maintained by automatic reinforcement. Common interventions for pica use some combination of response blocking, response interruption and redirection (RIRD), differential reinforcement of alternative behavior (DRA), and noncontingent reinforcement with competing stimuli. However, there is need for additional research regarding DRA procedures that emphasize skills acquisition by teaching alternative behaviors that modify the established behavioral chain of pica responses that occur in the presence of non-edible stimuli. There is also a need to examine the generality of recent advances in competing stimulus assessment (CSA) methodologies—namely, the augmented-CSA (A-CSA)—to pica. Thus, the purpose of the present investigation was to systematically replicate and extend previous research for the assessment and treatment of pica in an individual with IDD. First, we conducted a functional analysis to identify environmental variables associated with pica. Next, taught Patrick a differential response (i.e., discard pica items in trash receptacle) to earn reinforcers in conjunction with a RIRD procedure. Finally, we conducted an A-CSA for pica. Overall, low rates of pica were maintained over time with a combination of these procedures, and treatment was generalized across settings and people.     

“Shame: The Misplaced Debt of Structural Sin”

Although sexual violence and economic distress are often understood and responded to as individual problems, they are rooted in and must be understood within the social systems of patriarchy and advanced global capitalism, both of which normalize these traumas. The problem is that social systems divert guilt for structural sin onto individuals in the form of shame, which I argue is the misplaced debt of structural sin. Through narrative and analysis, I demonstrate the problems of silence, judgement, and death associated with the misplaced debt of shame in structural sin. Preliminarily, I suggest that the theology of the cross enables Christians to name structural sin for what it actually is; judge who or what is truly guilty; and remove shame and guilt from survivors to foster flourishing.     

Memory Performance and Socio-Economic Status

Memory ability is affected by the physical, educational and health environments. The nature of these environments, in turn, differs across people with different socio-economic status (SES). Thus, it would be expected that memory performance would vary systematically with SES. However, memory researchers have yet to examine the relationship between economic variables and memory performance. This paper reviews several literatures (medical, public health, IQ, sociological and memory) to assess the relationship—if any—of socio-economic status to memory performance. The results of the review revealed that memory performance is strongly and directly correlated with SES. However, the results were not strong enough to determine whether the extent of this relationship differs across different kinds of memory. These results suggest that memory researchers should investigate further the nature of the relationship between SES and memory performance and take account of the possible influence of SES in the design and interpretation of memory data. © 1997 by John Wiley & Sons, Ltd.