Philosophy of Development: Reconstructing the Foundations of Human Development and Education,edited by Wouter van Haaften,Michiel Korthals and Thomas Wren

Studies in Philosophy and Education -     

Choice behavior in transition: development of preference for the higher probability of reinforcement.

Ten acquisition curves were obtained from each of 4 pigeons in a two-choice discrete-trial procedure. In each of these 10 conditions, the two response keys initially had equal probabilities of reinforcement, and subjects' choice responses were about equally divided between the two keys. Then the reinforcement probabilities were changed so that one key had a higher probability of reinforcement (the left key in half of the conditions and the right key in the other half), and in nearly every case the subjects developed a preference for this key. The rate of acquisition of preference for this key was faster when the ratio of the two reinforcement probabilities was higher. For instance, acquisition of preference was faster in conditions with reinforcement probabilities of .12 and .02 than in conditions with reinforcement probabilities of .40 and .30, even though the pairs of probabilities differed by .10 in both cases. These results were used to evaluate the predictions of some theories of transitional behavior in choice situations. A trial-by-trial analysis of individual responses and reinforcers suggested that reinforcement had both short-term and long-term effects on choice. The short-term effect was an increased probability of returning to the same key on the one or two trials following a reinforcer. The long-term effect was a gradual increase in the proportion of responses on the key with the higher probability of reinforcement, an increase that usually continued for several hundred trials.     

An automatic micropipette fluid dispenser

An automatic device for repeated dispensation of a precisely controlled amount of fluid is described. The device employs a repeating micropipette powered by an electric motor geared to a rack-and-pinion drive. In our particular application, thirsty rats work for 0.2-ml shots of water delivered to a metal spout connected to a drinkometer circuit. This arrangement permits the recording of both volumetric intake and the number of licks directed at the spout.     

EFFECTS OF ALTERNATIVE WEIGHTING METHODS IN A POLICY- CAPTURING APPROACH TO JOB EVALUATION: A REVIEW AND EMPIRICAL INVESTIGATION

This research was designed to examine differences in the predictive power of alternative scale weighting methods in the context of job evaluation. Two different point-factor job evaluation instruments were used to evaluate 71 managerial and service jobs in a metropolitan university, and five different weighting models were compared in terms of predictive validity and salary classification. For the job evaluation system having high multicollinearity and validity concentration, no significant differences in accuracy were found among the weighting methods. However, in the more heterogeneous system, prediction models based upon unit weights, correlational weights, and multiple regression had significantly higher predictive validity than models based upon equal raw score weights or rational weights developed by a job evaluation committee. In addition, the weighting models differed substantially in terms of the predicted policy wages and classification structures.     

Body posture and gender impact neural processing of power-related words

Judging others’ power facilitates successful social interaction. Both gender and body posture have been shown to influence judgments of another’s power. However, little is known about how these two cues interact when they conflict or how they influence early processing. The present study investigated this question during very early processing of power-related words using event-related potentials (ERPs). Participants viewed images of women and men in dominant and submissive postures that were quickly followed by dominant or submissive words. Gender and posture both modulated neural responses in the N2 latency range to dominant words, but for submissive words they had little impact. Thus, in the context of dual-processing theories of person perception, information extracted from both behavior (i.e., posture) and from category membership (i.e., gender) are recruited side-by-side to impact word processing.     

Attentional focus affects how events are segmented and updated in narrative reading

Readers generate situation models representing described events, but the nature of these representations may differ depending on the reading goals. We assessed whether instructions to pay attention to different situational dimensions affect how individuals structure their situation models (Exp. 1) and how they update these models when situations change (Exp. 2). In Experiment 1, participants read and segmented narrative texts into events. Some readers were oriented to pay specific attention to characters or space. Sentences containing character or spatial-location changes were perceived as event boundaries—particularly if the reader was oriented to characters or space, respectively. In Experiment 2, participants read narratives and responded to recognition probes throughout the texts. Readers who were oriented to the spatial dimension were more likely to update their situation models at spatial changes; all readers tracked the character dimension. The results from both experiments indicated that attention to individual situational dimensions influences how readers segment and update their situation models. More broadly, the results provide evidence for a global situation model updating mechanism that serves to set up new models at important narrative changes.     

Who Counts as Human? Antecedents to Androcentric Behavior

People view men as typically human, although some conditions may make this more or less likely. Language has been implicated as one factor, with masculine generic language (e.g., he used neutrally) leading to more androcentrism relative to its alternatives. However, the influence of two types of alternatives (e.g., they vs. he or she) remains unclear. The present study asked 297 male and female online participants from the United States to select typical representations of humanity from a set of White and Black male and female faces. The wording for the concept humanity was manipulated to be either a typical member of mankind, a typical human, or a typical man or woman (or woman or man). Overall, participants selected more White targets. Participants also selected more male targets, but the degree to which that was the case was affected by wording and participant’s gender. Participants, particularly male participants, in the mankind and human wording conditions were more likely to select a male target as representative, whereas in the man or woman condition, participants’ choices did not differ from chance. Thus, androcentric thinking may be more mutable than previously surmised, varying by participants’ gender and by context.     

Tracking Privilege‐Preserving Epistemic Pushback in Feminist and Critical Race Philosophy Classes

Classrooms are unlevel knowing fields, contested terrains where knowledge and ignorance are produced and circulate with equal vigor, and where members of dominant groups are accustomed to having an epistemic home‐terrain advantage. My project focuses on one form of resistance that regularly surfaces in discussions with social‐justice content. Privilege‐preserving epistemic pushback is a variety of willful ignorance that many members of dominant groups engage in when asked to consider both the lived and structural injustices that members of marginalized groups experience daily. I argue that this dominant form of resistance is neither an expression of skepticism nor a critical‐thinking practice. I suggest that standard philosophical engagements with these expressions of resistance are incapable of tracking the harms of privilege‐preserving epistemic pushback. I recommend treating this pushback as a “shadow text,” that is, as a text that runs alongside the readings in ways that offer no epistemic friction. I offer this as one critical philosophical practice for making students mindful of the ways they contribute to the circulation of ignorance and epistemic violence during the course of their discussions.