Moral Responsibility,Guilt, and Retributivism

This paper defends a minimal desert thesis, according to which someone who is blameworthy for something deserves to feel guilty, to the right extent, at the right time, because of her culpability. The sentiment or emotion of guilt includes a thought that one is blameworthy for something as well as an unpleasant affect. Feeling guilty is not a matter of inflicting suffering on oneself, and it need not involve any thought that one deserves to suffer. The desert of a feeling of guilt is a kind of moral propriety of that response, and it is a matter of justice. If the minimal desert thesis is correct, then it is in some respect good that one who is blameworthy feel guilty—there is some justice in that state of affairs. But if retributivism concerns the justification of punishment, the minimal desert thesis is not retributivist. Its plausibility nevertheless raises doubt about whether, as some have argued, there are senses of moral responsibility that are not desert-entailing.     

Response strength in extreme multiple schedules

Four pigeons were trained in a series of two-component multiple schedules. Reinforcers were scheduled with random-interval schedules. The ratio of arranged reinforcer rates in the two components was varied over 4 log units, a much wider range than previously studied. When performance appeared stable, prefeeding tests were conducted to assess resistance to change. Contrary to the generalized matching law, logarithms of response ratios in the two components were not a linear function of log reinforcer ratios, implying a failure of parameter invariance. Over a 2 log unit range, the function appeared linear and indicated undermatching, but in conditions with more extreme reinforcer ratios, approximate matching was observed. A model suggested by McLean (1991), originally for local contrast, predicts these changes in sensitivity to reinforcer ratios somewhat better than models by Herrnstein (1970) and by Williams and Wixted (1986). Prefeeding tests of resistance to change were conducted at each reinforcer ratio, and relative resistance to change was also a nonlinear function of log reinforcer ratios, again contrary to conclusions from previous work. Instead, the function suggests that resistance to change in a component may be determined partly by the rate of reinforcement and partly by the ratio of reinforcers to responses.     

Curing Psychopathology: Can Philosophy Help?

Abstract

It is argued that philosophers can contribute indirectly to the cure of psychopathology by helping to resolve problems that impede the development of effective treatments. Two such problems are discussed. The first arises because different schools of therapy use conflicting criteria in evaluating therapeutic outcomes. A theory of Defective Desires is developed to deal with this problem. The second issue, which divides the field of psychotherapy, concerns the need for experiments, especially in validating claims of therapeutic efficacy. An epistemological foundation is developed to support the need for experiments.     

Examination of the Psychometric Properties of a Brief PTSD Measure on a French–Canadian Undergraduate Population

This study examines the psychometric properties of the French-Canadian Modified PTSD Symptom Scale (MPSS-FC) in a sample of French-Canadian undergraduates. Findings uncovered a 3-dimensional model for the Frequency and Severity scales, which shared factorial invariance. In addition, the MPSS-FC scales had adequate internal consistency and a satisfactory 5-week test-retest reliability. In view of its satisfactory psychometric properties, the MPSS-FC seems promising as a brief screening measure of PTSD. Indeed, the MPSS-FC as a stand-alone measure could be used with a population known to have been exposed to a traumatic event.     

Joint Influence of Visual and Auditory Words in the Stroop Task

We conducted four Stroop color–word experiments to examine how multiple stimuli influence interference. Experiments 1a and 1b showed that interference was strong when the word and color were integrated, and that visual and auditory words made independent contributions to interference when these words had different meanings. Experiments 2 and 3 confirmed this pattern when the word information and color information were not integrated, and hence when overall interference was substantially less. Auditory and visual interference effects are comparable except when the visual distracter is integrated with the color, in which case interference is substantially enhanced. Overall, these results are interpreted as being most consistent with a joint influence account of interference as opposed to a capture account.     

Kinematic markers of distance-specific control in linear hand movements

In this article, the authors analyze kinematic characteristics of reaching movements to memorized visual target locations. An increase in target distance was associated with a decrease in correlation between peak acceleration and movement distance and with a simultaneous increase in correlation between peak acceleration and movement time. According to the previous work on motor control in isometric force responses and in reaching movements these results seem to indicate a continuous transition from a rather preplanned to a more corrective mode of movement control, which may be associated with an adaptive mechanism serving to counteract an increase in signal-dependent noise of the motor system.     

Love styles, shyness, and patterns of emotional self-disclosure

Previous research has shown a relationship between love styles and shyness. This study explored the possibility that this effect may be due to differences in patterns of self-disclosure associated with shyness. University student participants (N = 143) completed the Love Attitudes Scale, the Emotional Self-Disclosure Scale, and the Revised Cheek and Buss Shyness Scale. Correlations between the measures were calculated and significant results ranged from r = .18 to .30. Findings supported previous research in showing significant relationships between shyness and love styles; self-disclosure showed no relationship with shyness but did show some direct associations with love style scores. Results are discussed in relation to the importance of self-disclosure in relationship development.     

Rapid acquisition of choice and timing and the provenance of the terminal-link effect

Eight pigeons responded in a concurrent-chains procedure in which terminal-link schedules changed pseudorandomly across sessions. Pairs of terminal-link delays either summed to 15 s or to 45 s. Across sessions, the location of the shorter terminal link changed according to a pseudorandom binary sequence. On some terminal links, food was withheld to obtain start and stop times, measures of temporal control. Log initial-link response ratios stabilized within the first half of each session. Log response ratio was a monotonically-increasing but nonlinear function of programmed log terminal-link immediacy ratio. There was an effect of absolute terminal-link duration on log response ratio: For most subjects, preference for the relatively shorter terminal-link delay was stronger when absolute delays were long than when absolute delays were short. Polynomial regressions and model comparison showed that differences in degree of nonlinearity, not in sensitivity to log immediacy ratio, produced this effect. Temporal control of stop times was timescale invariant with scalar variability, but temporal control of start times was not consistent across subjects or terminal-link durations.     

Brain Activity in the Play of Dominant Strategy and Mixed Strategy Games

We conjecture that the thought processes used to solve dominant strategy games and mixed strategy games are quite distinct. Two-person games with dominant strategies can be treated as simple decision problems that involve no assessment of one's partner. By contrast, two-person games with mixed strategies require that one think about one's partner. We measure differences in electroencephalogram (EEG) activity while a human subject is playing two-person games. We time-lock the EEG to a common event and use the average across many trials and subjects to find an Event Related Potential (ERP) associated with the common event. The ERP is the brain's response to events—in this case our different games. Our findings lend modest support for the idea that subjects respond to types of games differently.