Using PPT to Analyze Suboptimal Human–Automation Performance

Diagnostic automation aids are designed to improve human performance by increasing accuracy in event detection tasks. However, human–automation performance has frequently fallen short of expectations, particularly when the aid is highly reliable. In those cases, human–automation performance is often suboptimal, in that a human being augmented with a diagnostic aid does more poorly than the automation itself. Previously, there have been only ambiguous explanations for why this occurs, with few suggestions on how to effectively eliminate suboptimal performance. Fortunately, with the advent of a new general theory of task performance, termed Potential Performance Theory (PPT) by D. Trafimow and S. Rice (2008 Trafimow, D. and Rice, S. 2008. Potential Performance Theory: A general theory of task performance applied to morality. Psychological Review, 115(2): 447–462. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]; 2009), one can now determine exactly why suboptimal performance occurs. Results from the present study reveal that inconsistency is the culprit, rather than just poor strategy selection. Furthermore, PPT allows one to determine exactly how much of the performance decrement is because of inconsistency.     

Hypothesis testing and theory evaluation at the boundaries: surprising insights from Bayes's theorem

Because the probability of obtaining an experimental finding given that the null hypothesis is true [p(F\H0)] is not the same as the probability that the null hypothesis is true given a finding [p(H0\F)], calculating the former probability does not justify conclusions about the latter one. As the standard null-hypothesis significance-testing procedure does just that, it is logically invalid (J. Cohen, 1994). Theoretically, Bayes's theorem yields p(H0\F), but in practice, researchers rarely know the correct values for 2 of the variables in the theorem. Nevertheless, by considering a wide range of possible values for the unknown variables, it is possible to calculate a range of theoretical values for p(H0\F) and to draw conclusions about both hypothesis testing and theory evaluation.     

A test of whether attributions provide for self-enhancement or self-defense

It is well known that people often make attributions in a way that is favorable to their self-concepts (see R. L. Collins, 1996, for a review). However, it is less clear whether the primary effect is to enhance self-esteem or to defend against the possible loss of self-esteem. The authors performed an experiment to test these possibilities against each other. In a completely between-participants design, participants recalled either a positive behavior or a negative behavior that was performed by themselves or others. They then judged the positivity or negativity of the behavior and made trait attributions about the actor (i.e., himself, herself, or others). The results indicated that although judgments and trait attributions for positive behaviors were similar for the self and for others, judgments and trait attributions for negative behaviors were less negative for the self than they were for others. The authors interpreted these and other findings as supporting a defensive strategy rather than an enhancive strategy.     

The role of affect in determining the attributional weight of immoral behaviors

Theories about why immoral behaviors carry a large amount of attributional weight tend to emphasize traditional cognitive variables. In contrast, the authors propose that the degree of negative affect that these behaviors induce in observers is largely responsible for their attributional weight. Studies 1 and 2 demonstrate an association between the amount of negative affect induced by immoral behaviors and their attributional weight. Studies 3 and 4 provide causal evidence for this idea by either "adding in" or "taking away" the negative affect associated with immoral behaviors to influence their attributional weight. Finally, Study 5 demonstrates that negative affect can be induced through a variety of negative emotions (disgust, sadness, and fear), with similar results. It is argued that it is difficult to account for these data solely on the basis of traditional cognitive variables, and so a theory that includes an emphasis on affect as a causal variable is desirable.     

Smell and Taste Classification of the Same Stimuli

Much literature has suggested that people who are discriminated against or are in collectivist cultures are particularly susceptible to the social consequences of society. In the present study, the authors conducted 3 experiments to test how this factor influences attitudinal versus normative control over behaviors. First, they measured males’ and females’ attitudes, subjective norms, and behavioral intentions with respect to a large number of behaviors. Although between-participants analyses were mostly uninformative, within-participants analyses uncovered strong evidence that behaviors are more under attitudinal control for females than for males. Similar analyses in a crosscultural experiment involving participants from the United States, the United Kingdom, China, and Mexico support the hypothesis that behaviors are more under attitudinal control for collectivists than for individualists. Finally, experimental data collected in the United States and Saudi Arabia further support this conclusion. Taken together, the findings suggest that although social consequences are both “social” and “consequences,” the latter is more important than the former.     

Retention of a Time Pressure Heuristic in a Target Identification Task

S. Rice and D. Keller (2009) previously reported that participants who were put under time pressure tended to comply more with a diagnostic aid than participants who were not put under time pressure. The present study investigates whether or not learning the benefits of this time pressure heuristic carries over to a second session. Seventy-two New Mexico State University students performed a simulated target-detection task, assisted by a 95% reliable diagnostic aid. Participants were exposed to the following conditions, which were composed of two sessions: speeded–speeded, unspeeded–speeded, speeded–unspeeded, or unspeeded–unspeeded. Results showed that participants who completed the speeded condition for Session 1 performed just as well in the 2nd session regardless of whether or not they were put under time pressure. Participants found that complying with the aid was beneficial to overall performance and continued to comply in a 2nd session even when allowed more time to overrule the aid.     

Can priming your self lead to punishing others?

Previous research has shown that priming the individual self can increase the accessibility of individual self-cognitions. In turn, we hypothesized that blame for immoral behaviors also would increase, leading to higher assignments of punishment, but that the size of this effect would depend on whether the behaviors violated perfect or imperfect duties. To test these hypotheses, participants assigned yearly bonus penalties to employees who had performed dishonest, disloyal, unfriendly, or uncharitable acts. As expected, the individual prime increased punishments, and this effect was accentuated for violations of perfect duties relative to violations of imperfect duties.     

The role of causal attributions in competitive situations

Previous data have shown that successful women are judged to have masculine characteristics [J. A. Doyle (1989), The Male Experience(2nd ed.), Dubuque, IA: Wm. C. Brown; D. L. Gill (1986), Psychological Dynamics of Sport,Champaign, IL: Human Kinetics; D. J. Murphy (1988), “Sport and Gender,” in W. M. Leonard II (Ed.), A Sociological Perspective of Sport(3rd ed.), New York: Macmillan; P. Willis (1994), “Women in Sport in Ideology,” in S. Birrell and C. L. Cole (Eds.), Women, Sport, and Culture,Champaign, IL: Human Kinetics]. Two experiments were conducted to test two different explanations for this effect, the appraisal and attribution hypotheses. In Experiment 1, male participants who lost to a female confederate on a masculine-relevant task rated her as having more masculine and fewer feminine characteristics than when the task was described as feminine-relevant. However, heart rate and blood pressure data failed to support the appraisal hypothesis that these reactions were due to the stress of losing to the female, or defensiveness. The alternative hypothesis that these ratings were due to standard attributional processes was more consistent with the data. Consequently, this hypothesis was tested in Experiment 2 using an attributional paradigm. Consistent with Experiment 1, the attribution hypothesis fared better than did the appraisal hypothesis.