Conditioned flavor preferences as a function of deprivation level: Preferences or aversions?

Rats tend to prefer flavors previously consumed under low deprivation to flavors previously consumed under high deprivation (Capaldi & Myers, 1982). We attempted to distinguish among possible associative explanations by determining whether this conditioning phenomenon was based upon conditioned preferences, conditioned aversions, or both. We compared preference for flavors presented exclusively under either high or low deprivation with preference for a neutral flavor. In Experiments 1A and 1B the neutral flavor was one that had been randomly paired with both high and low deprivation, whereas in Experiments 2 and 3 the neutral flavors had not been associated with either high or low deprivation. Our results strongly suggest that this conditioning phenomenon is based upon an actual increase in preference for the flavor consumed under low deprivation rather than on any form of aversion conditioning.     

University class size: Is smaller better?

This study investigates the relationship between class size and achievement at the college level. Recent meta-analyses have found a strong relationship between class size and student achievement, but few of the studies examined class size larger than 40 or university-age populations. This analysis examines a university's testing-center data-archives representing 305 sections from 24 different courses. Section sizes ranged from 13 to 1,006. A total of 16,230 test scores were analyzed. The results of this investigation reveal that at the college level, class size may be less important an influence on student achievement than some educators have thought.     

The National Diffusion Network: A career education bonus

Bill Guise is Assistant Director, Washington National Diffusion Network Facilitator Office.     

Assessing Multiliteracies and the New Basics

This paper addresses the skills and characteristics required of successful learners, workers and citizens in the knowledge economy. The authors trace the shifting commercial, technological and cultural conditions characteristic of this economy, and highlight the key qualities now required for individual success. Effective learners will increasingly need to be autonomous and self-directed, flexible, collaborative, of open sensibility, broadly knowledgeable, and able to work productively with linguistic and cultural diversity. While still prevalent, it is held that standardised testing and a 'back to basics' approach to curriculum are unable to promote and measure effectively these skills and sensibilities. Instead, a broader and more creative approach to curriculum and assessment is recommended. A 'new basics' is argued for at the level of curriculum, with correlative assessment techniques such as analysis of portfolios, performance, projects and group work.     

Taste preferences as a function of food deprivation during original taste exposure

It has been reported previously that rats prefer a flavor they consumed under high deprivation to a flavor they consumed under low deprivation (Revusky, 1967). Here it was found that this preference occurs only if nutritive solutions are used and the flavors are given preceding and following eating. If flavors are given separately from the daily feeding, rats prefer the flavor given under low deprivation, whether or not a nutritive solution is used (Experiment 3). If flavors are given before and after the daily feeding, rats prefer the flavor they had under high deprivation (before feeding) more if sucrose solutions are used than if saccharin solutions are used and more on a high-deprivation test than on a low-deprivation test (Experiments 1 and 2). It was concluded that the “incentive value” of consumption is not necessarily higher under high deprivation than under low deprivation. The preference for the low-deprivation flavor obtained here may reflect a greater proportional rewarding effect of consumption under low deprivation or may reflect an aversion to the flavor consumed under high deprivation. Perhaps a small taste of flavor under high deprivation initiates responses of digestion that are unsatisfied and thus aversive, and the more so the higher the deprivation level.     

Infants' Reliance on a Social Criterion for Establishing Word-Object Relations

The language children hear presents them with a multitude of co-occurrences between words and things in the world, and they must repeatedly determine which among these manifold co-occurrences is relevant. Social factors—such as cues regarding the speaker's referential intent—might serve as one guide to whether word-object covariation should be registered. In 2 studies, infants (15–20 months and 18–20 months in Studies 1 and 2, respectively) heard novel labels at a time when they were investigating a single novel object; in one case the label was uttered by a speaker seated within the infant's view and displaying concurrent attention to the novel toy (coupled condition), whereas in the other case the label emanated from a speaker seated out of the infant's view (decoupled condition). In both studies, subsequent comprehension questions indicated that infants of 18–20 months registered a stable link between label and object in the coupled condition, but not in the decoupled condition, despite the fact that covariation between label and object was equivalent in the 2 conditions. Thus, by 18–20 months children are inclined to establish a mapping between word and object only when a speaker displays signs of referring to that object.     

Shock intensity and warning signal effects on several measures of operant avoidance acquisition

Acquisition of both signaled and unsignaled operant avoidance learning was studied in 64 rats as a function of shock intensity, with three different warning signals used in the signaled procedure. In both signaled and unsignaled avoidance, overall response rate was a progressively increasing function of shock intensity. This was due to both an absolute and relative increase in the frequency of responses at shorter interresponse times with increasing shock intensity. Presence of an effective warning signal in the interval immediately preceding shock increased the probability of an avoidance response in this interval, decreased overall response rate, and reduced shock frequency. A buzzer signal proved most effective, followed by tone and light. However, once a warning signal occurred, the probability of an avoidance response to the signal was virtually independent of shock intensity. Also, an index of avoidance efficiency proved to be inversely related to shock intensity.     

Emotional Dimensions of Watching Zoo Animals: An Experience Sampling Study Building on Insights from Psychology

Abstract There is little research about how visitors to zoos and aquariums respond emotionally to the animals they experience. The research that does exist has seldom been informed by current psychological literature on affect, which examines the nature and roles of sentiments, moods, emotions, and affective traits. Emotion is multidimensional: it focuses on a person's core goals; directs attention and interest; arouses the body for action; and integrates social group and cultural factors. It is thus a central component of meaning‐making. This article provides an overview of the literature on emotion as it applies to human emotional responses to animals. Informed by this literature, this paper presents results from a research study conducted at a zoo. Subjects (279 adults) were each electronically paged once while viewing one of three zoo animals (snake, okapi, or gorilla). Subjects completed scales on 17 specific emotions, seven items measuring evaluation and arousal, and other scales and responses to the animal. Four patterns of emotions emerged, ranging from “equal opportunity” emotions to “highly selective” emotions. The variables that were most important in influencing emotions were not demographic ones, but the kind of animal, subject's emotionality, relation to the animal, and other items predicted by emotion theory. Implications for biophilia, conservation, and the study of emotional responses to animals are discussed.