Effects of escape to alone versus escape to enriched environments on adaptive and aberrant behavior

Escape-maintained aberrant behavior may be influenced by two outcomes: (a) a break from the activity and (b) subsequent access to preferred activities. To assess this hypothesis, a treatment was developed that analyzed response allocation across two break options: break alone and break with access to preferred social activities. The break with preferred activities decreased aberrant behavior and increased appropriate behavior.     

“work ethic” in pigeons: Reward value is directly related to the effort or time required to obtain the reward

Stimuli associated with less effort or with shorter delays to reinforcement are generally preferred over those associated with greater effort or longer delays to reinforcement. However, the opposite appears to be true of stimuli thatfollow greater effort or longer delays. In training, a simple simultaneous discrimination followed a single peck to an initial stimulus (S+_FR1 S−_FR1) and a different simple simultaneous discrimination followed 20 pecks to the initial stimulus (S+_FR20 S−_FR20). On test trials, pigeons preferred S+_FR20 over S+_FR1 and S−_FR20 over S−_FR1. These data support the view that the state of the animal immediately prior to presentation of the discrimination affects the value of the reinforcement that follows it. This contrast effect is analogous to effects that when they occur in humans have been attributed to more complex cognitive and social factors.     

Category Attitude Measures: Exemplars as Inputs

The role of exemplars in formation of attitudes toward a category has, surprisingly, been ignored in prior consumer research. In the present research we seek to develop a better understanding of the relationship between category exemplars (e.g., the products in a brand category) and overall attitudes toward the category. Attitude measures that incorporate evaluations of individual branded products may be useful, both conceptually and practically, and can complement more traditional multi‐attribute measures of attitude. Across 3 studies we present evidence that a composite index of attitudes toward category exemplars, weighted by exemplar typicality, is related to overall category attitudes, sometimes more strongly than a traditional multi‐attribute index. We also demonstrate that elaboration upon the individual exemplars further strengthens the relationship between category attitudes and this composite index. Theoretical implications for attitude theory, as well as managerial implications, are discussed.     

Maternal employment and children's achievement in context: a meta-analysis of four decades of research

This meta-analysis of 68 studies (770 effect sizes) used random effects models to examine whether children's achievement differed depending on whether their mothers were employed. Four achievement outcomes were emphasized: formal tests of achievement and intellectual functioning, grades, and teacher ratings of cognitive competence. When all employment was compared with nonemployment for combined and separate achievement outcomes without moderators, effects were nonsignificant. Small beneficial effects of part-time compared with full-time employment were apparent for all achievement outcomes combined and for each individual achievement outcome. Significant sample-level moderators of the associations between maternal employment and achievement for all outcomes combined included family structure, race/ethnicity, and socioeconomic status; associations were positive when samples were majority 1-parent families and mixed 1- and 2-parent families, racially/ethnically diverse or international in composition, and not middle-upper class. Analyses of child gender indicated more positive effects for girls. Children's age was a significant moderator for the outcome of intellectual functioning. The identification of sample-level moderators of the relationship between maternal employment and children's achievement highlights the importance of social context in understanding work-family linkages.     

Alternative Models of Price Behavior in Dyadic Negotiations: Market Prices, Reservation Prices, and Negotiator Aspirations

Three competing predictors of price are manipulated in a two-party distributive negotiation. These include prevailing market prices, negotiator reservation prices, and negotiator aspirations. We offer a cognitive interpretation of how each type of information is incorporated into the negotiator′s thought processes as an alternative cognitive reference point. In two studies varying the levels of these three factors, only reservation prices, not prevailing market prices or negotiator aspirations, account for significant variance in negotiated outcomes. Discussion is offered, suggesting that the negotiator as decision maker may experience a "dominant reference point" effect. When multiple pieces of relevant information are available, the negotiator may only be able to focus on one of them. Among the three predictors studied, the reservation price may be cognitively interpreted as the most absolute limit.     

A Transdisciplinary Perspective Concerning the Origin of the Species: The Migratory Theory of Genetic Fitness

Although the Neo-Darwin Theory of Evolution is one of the most celebrated theories in science, nonetheless it has received many criticisms. These criticisms are documented and a new transdisciplinary theory of origin is introduced. Darwin's original argument was that natural selection, through heritable changes, changed simple organisms over time. These heritable changes are responsible for the complex plethora of life seen around us today. Darwin's original theory, however, was deconstructed after the fact into a mutation-based theory. This mutation-based theory in its current form is an insufficient and indeed unnecessary transdisciplinary explanation. A subsequent statistical comparison between the six extant scientifically based primary theories of origin was undertaken and based on current biological knowledge a statistically significantly (p < .05) best fit phenotypic model emerged.