Contrast, induction, facilitation, suppression, and conservation

Ten rats received all of their water in daily 1-hr sessions. Following a baseline phase in which lever and water spout were freely available throughout each session, subjects were trained to press the lever for water on mixed schedules composed of two alternating components. Each component gave access to water for a fixed cumulation of drinking time every time the rat cumulated a fixed amount of lever-pressing time. Changes in one component produced contrast and induction effects, both positive and negative, with respect to both lever pressing and drinking in the unchanged component. All schedules facilitated lever pressing relative to baseline. All schedules suppressed drinking relative to baseline, even though contingency sessions allowed ample time to perform the baseline amount of drinking. The entire pattern of results was predicted in quantitative detail by assuming that the total amount of a dimension apportioned to lever pressing and drinking is conserved between baseline and contingency sessions. Conservation theory was shown to predict several effects produced by simple fixed-ratio schedules, and was compared favorably with probability-differential (Premack, 1971) and response-deprivation (Timberlake and Allison, 1974) theory.     

Multiple incentives in encouraging car pool formation on a university campus

The effects of a combined token economy and reserved parking program were evaluated as a means of increasing car pooling among students on a university campus. Following a baseline period, students in two experimental parking lots were notified of the availability of reserved parking and coupons redeemable for 25 cents in merchandise for each occupant of automobiles containing two or more people. Two control lots also were monitored for a comparison of treatment effects. Results indicated variable increases in car pooling in the two experimental lots and no increase in the control lots. Removal of the 25-cent coupons from one treatment lot (reserved parking only) did not adversely affect rates of car pooling. An analysis of individual automobile occupancy rates among car poolers indicated distinct patterns of car pooling and underscored the importance of individual subject data analysis in the present situation. A cost-benefit analysis indicated that even moderately effective car pool programs can be cost-effective on both a public and personal level.     

Reducing elevator energy use: A comparison of posted feedback and reduced elevator convenience

The effects of two different procedures for reducing elevator energy use were assessed using a multiple-baseline design. In the first procedure, feedback about the amount of energy consumed by the elevators each week was posted on each elevator door. Later, signs advocating the use of stairs to save energy and improve health were posted next to the feedback signs. In the second procedure, the time required to travel between floors was increased by adding a delay to the elevator door closing mechanisms. Results indicated that neither feedback alone nor feedback plus educational signs reduced the amount of energy consumed by the elevators. However, use of the door delay reduced consumption by one-third in all elevators.A second experiment replicated the effect of the door delay on energy consumption and, in addition, demonstrated that the door delay also produced a reduction in the number of persons using the elevator. The second experiment also showed that, following an initial period during which a full delay was in effect, a gradual reduction of the delay interval resulted in continued energy conservation. Reduced convenience as a general strategy for energy conservation is discussed.     

Reduction of residential consumption of electricity through simple monthly feedback

Feedback has been widely used in efforts to control the consumption of electricity. Previous efforts, however, have used forms of feedback that seem economically impractical. The present study examined the effects of a feasible program of monthly feedback. Forty matched nonvolunteer participants were randomly divided into two groups: a no-contact control group and a monthly feedback group. In an A-B-A design, the data showed a clear decrease in electricity consumption for the feedback group during the feedback phase. The effect was maintained during a 4-mo intervention period. Withdrawal of the feedback was associated with a return to higher levels of electricity consumption.     

Effects of informational prompts on energy conservation in college classrooms

A multiple-baseline design was used with two target classroom groups (n = 28 and 27) in a study to reduce electrical energy waste in college classrooms. A dittoed letter, signed by a faculty member, was sent to each professor in the prompt condition. In the letter the professor was informed that he or she taught prior to an unscheduled period and was asked to turn off lights following the class. The results showed that after the prompt, the percentage of rooms with lights turned off increased by 13% and 6% in each target group. A further analysis of the 10 classrooms that had the lowest baseline rates of turning lights off indicated a 30% increase after the prompt. This study indicates that a minimum prompt procedure was effective in reducing electrical energy waste. The further significance of these results are also discussed.     

DOES NATURE NEED TO BE REDEEMED?

Abstract. In the light of evolutionary biology, the biblical idea that nature fell with the coming of human sin is incredible. Biblical writers, classical theologians, and contemporary biologists are ambivalent about nature, finding in natural history both a remarkable genesis of life and also much travail and suffering. Earth is a land of promise, and there is the conservation, or redemption, of life in the midst of its perpetual perishing. Life is perennially a struggling through to something higher. In that sense even natural history is cruciform, though human sinfulness introduces novel tragedy. Humans now threaten creation; nature is at more peril than ever before.     

Attachment avoidance to God exacerbates the negative effect of tangible resource loss on psychological resource loss

The present study examined the impact of losing tangible resources on psychological resources in a sample of college students (n?=?160) affected by Hurricane Katrina. The data was collected approximately five months after the storm. Based on conservation of resources theory, we tested whether the loss of tangible resources (e.g., food, water) would be positively related to the loss of psychological resources (e.g., optimism, hope), and whether this association would be exacerbated by having an insecure (anxious or avoidant) attachment to God. As predicted, loss of tangible resources was related to the loss of psychological resources, and this relationship was amplified in participants who had an avoidant attachment to God. We conclude by discussing implications of the present study and areas for future research.     

MICHEL DE M'UZAN AND ORIGINS OF IDENTITY

Michel de M'Uzan describes a way to think about identity in which two distinct sources of our sense of identity must be considered. His innovation is the concept of the vital‐identital, which he suggests is equally foundational with the sense of identity derived from the early human environment. The term endogenous identity is used to unify under one heading the ideas that de M'Uzan employs to build his concept of vital‐identital. The author summarizes de M'Uzan's earlier work, elaborates on his more recent ideas, and illustrates the use of de M'Uzan's ideas with a cultural and a clinical example.     

Are economic conditions related to nonnormative life satisfaction development? Evaluating the relative impact of economic conditions,personality, and subjective health

This study examined the relative contribution of psychological and socioeconomic resources to explaining qualitative individual differences in life satisfaction development. We used growth mixture modeling and a cohort‐sequential design to investigate life satisfaction development from ages 25 to 65, in a nationally representative panel (the Socioeconomic Panel). Eighty‐three percent of the participants experienced stability in life satisfaction. In a subgroup of individuals (10%), life satisfaction declined. This subgroup lived under less favorable economic conditions and reported downward moves on an index of socioeconomic status. In another subgroup (7%), life satisfaction was low at age 25 and increased up to age 65. This group was also socioeconomically disadvantaged but scored higher on adaptive personality traits and experienced upward social mobility. Generally, personality traits explained level differences in life satisfaction better than economic conditions. However, economic conditions explained nonnormative life satisfaction development better than generalized control beliefs and the Big Five traits.