Note on changes in response latency following discrimination training in the monkey

Two monkeys were trained to press and hold down a telegraph key in the presence of a red light. Subsequent release of the key in response to a white cross superimposed on the red background was followed by reinforcement. Key release in response to a white circle on the red background was never reinforced. Latencies for the key release response to the reinforced stimulus (cross) were considerably shorter and less variable than those to the unreinforced stimulus (circle).     

Overt “mediating” behavior during temporally spaced responding

A rat was trained on a schedule that programmed reinforcements only when a minimum waiting time between successive responses was exceeded (DRL schedule). It was observed to fill much of the pause between lever presses with a stereotyped behavioral chain: it would take its tail in its mouth and nibble it. This behavior was shown to be functionally related to the efficiency with which the subject spaced its responses. It is thought to have served as mediating behavior, providing discriminating stimuli for appropriate lever presses.     

Sex differences on the Wechsler preschool and primary scale of intelligence

Male-female differences on the Wechsler Preschool and Primary Scale of Intelligence were examined for 1200 children aged 4–6.5 yr. Results provided fundamental support for previous work with older children showing better female performance on memory and psychomotor tasks and better male performance on spatial tasks, although the distinctions in performance were not as clear as with older children.     

Objectification leads to depersonalization: The denial of mind and moral concern to objectified others

Philosophers have argued that when people are objectified they are treated as if they lack the mental states and moral status associated with personhood. These aspects of objectification have been neglected by psychologists. This research investigates the role of depersonalization in objectification. In Study 1, objectified women were attributed less mind and were accorded lesser moral status than non‐objectified women. In Study 2, we replicated this effect with male and female targets and extended it to include perceptions of competence and pain attribution. Further, we explored whether target and perceiver gender qualify depersonalization. Overall, this research indicates that when people are objectified they are denied personhood. Copyright © 2010 John Wiley & Sons, Ltd.     

Information Integration Theory,Juror Bias,and Sentence Recommendations Captured Over Time in a Capital Trial

Initial juror verdicts have been shown to predict final verdicts, leading researchers to conclude that jurors seek confirmatory information during trial (confirmation bias) or distort information to fit pre‐existing biases (pre‐decisional distortion). However, Information Integration Theory suggests that individuals are not distorting/ignoring this information, and instead, information influences judgments in the direction of the message. The current study sought to test these competing theories in a juror setting. Mock jurors were presented with the sentencing phase of a capital trial and were asked to give sentence recommendations at eight different time points. Additionally, they were grouped by their pretrial bias as being pro‐defense, neutral, or pro‐prosecution. Results showed support for Information Integration Theory; although jurors' pretrial bias predicted final sentence, sentence recommendations were affected in the direction of the testimony presented throughout the trial (e.g., pro‐defense testimony lowered death penalty decisions across all groups). Implications and future directions are discussed. Copyright © 2015 John Wiley & Sons, Ltd.