The experimental critique and philosophical practice

Some experimental philosophers have criticized the standard intuition-based methodology in philosophy. One worry about this criticism is that it is just another version of the general skepticism toward the evidential efficacy of intuition, and is thereby subject to the same difficulties. In response, Weinberg provides a more nuanced version of the criticism by targeting merely the philosophical use of intuition. I contend that, though Weinberg’s approach differs from general skepticism about intuition, its focus on philosophical practices gives rise to a new difficulty. Most extant experimental surveys investigate intuitions about particular cases through vignettes giving little contextual information. However, philosophical practices crucially depend on intuitions about general claims and typically provide more contextual background. I argue that, due to these two differences between surveys’ and philosophers’ appeals to intuition, Weinberg’s critique lacks enough support from current experimental data. I conclude that experimental philosophers who engage in the negative program should pay more attention on testing philosophers’ use of general intuitions and context-rich intuitions.     

A comparison of systematic desensitization and reinforced practice procedures in fear reduction

At least two strategies of behavior modification seem possible in the treatment of neurotic disorders. In the first, systematic desensitization is used to reduce the anxiety associated with the avoidance behavior, thus reducing avoidance of the feared stimulus. In the second, anxiety is ignored and approach behavior is shaped by direct reinforcement according to operant conditioning principles. Each procedure enjoys a literature of successful application in both laboratory and clinical settings. Systematic desensitization has been effective in treating fears of small animals (Lang and Lazovik, 1963) interpersonal anxieties (Paul, 1966), and classic phobias (Lazarus, 1961). Operant approaches involving reinforced practice have proved successful in treating agoraphobia (Agras et al., 1968), anorexia nervosa (Bachrach et al., 1965), and various types of behavior of psychotic patients (Risley and Wolf, 1967; Ayllon and Azrin, 1968).The present study was designed to examine the relative therapeutic effectiveness of systematic desenzitization and reinforced practice in the treatment of snake phobia. Although Barlow et al. (1970) have suggested that “shaping” is more effective than systematic desensitization in the reduction of avoidance behavior, Ss in their “shaping” condition were given more experience with the aversive stimulus than desensitization Ss. The present study avoids such confounding.     

Transfer of fear reduction through systematic desensitization

Systematic desensitization therapy involves the presentation of fear-provoking situations through visualization As the visualizations cease to evoke emotional responses, the fear-provoking potential of the real situations decreases. Research has clearly shown that such transfer does indeed occur with a wide variety of fears. Transfer has been demonstrated, for example, with fear of small animals (Lang and Lazovik, 1963), interpersonal performance anxiety (Paul, 1966), classic phobias (Lazarus, 1961), test anxiety (Katahn, Strenger and Cherry, 1966), impotence (Wolpe, 1958) and frigidity (Lazarus, 1963). However, the nature of transfer has received little attention. Wolpe (1963) has claimed that transfer from therapy to the real life situation is almost complete and direct: “There is almost invariably a one-to one relationship between what the patient can imagine without anxiety and what he can experience in reality without anxiety”. This claim has received support from Rachman (1966) who found that fear reduction transferred immediately to the real situation in 82 per cent of his observations. Hoenig and Reed (1966) reported that after a brief delay, transfer effects were observed in the case of words representing fearful stimuli but were inconsistent in the case of the real stimuli. Agras (1967) found transfer to be delayed in all his cases. He further reported that, though all patients improved, a direct relationship between therapeutic progress and symptom reduction was not found. Both Hain et al. (1966) and Meyer and Crisp (1966) have described the failure of therapeutic effects to transfer to real life.These somewhat inconsistent reports may stem in part from the measurement of transfer effects at different times. Another possibility is that more fearful Ss may evidence less transfer than less fearful Ss. Lang and Lazovik (1963) reported that Ss who completed less than 75 per cent of the hierarchy showed little improvement although direct transfer effects were observed for less fearful Ss (those who complete 75 per cent or more hierarchy items). The present study of transfer effects was designed to remove confoundingof level of fear with extent of progress in systematic desensitization.     

Systematic desensitization in an experimental setting: A follow-up study

A follow-up study was done of female college student volunteers who had been treated for marked fear of snakes using systematic desensitization under four experimental conditions. In the original study four groups were differentiated on the basis of: (1) therapeutic instructions and praise; (2) therapeutic instructions alone; (3) praise alone; and (4) neither therapeutic instructions nor praise. At follow-up Ss were reassessed on a behavioral test of their ability to approach and handle a snake, and were interviewed to determine whether they had discerned the conditions of the original experiment.

Twenty-five of the original thirty-two Ss (78 per cent) were assessed a mean of 9.5 months after their experimental post-test. All four groups maintained their original gains and the inter-relationships of the groups remained stable: only instructions had a statistically significant added effect over systematic desensitization; the reinforcement and interaction factors did not attain statistical significance. From the interview data it could not be demonstrated that Ss were aware of either the instructional or reinforcement conditions of their respective groups.     

The effects of safety-seeking behavior and guided threat reappraisal on fear reduction during exposure: an experimental investigation

We examined the effects of safety-seeking behavior and guided threat focus and reappraisal on fear reduction during exposure. Participants (N=46) displaying marked claustrophobic fear were randomized to one of three 30-min exposure conditions: (a) guided threat focus and reappraisal; (b) safety-behavior utilization; or (c) exposure only control. Tripartite outcome assessments during a behavioral approach test, along with measures of suffocation and restriction fears were obtained at pre- and post-treatment, and at a 2-week follow-up. Treatment process measures were collected throughout treatment and consisted of indices of fear activation; within and between-trial fear habituation; and suffocation and entrapment expectancies. Measures of safety behavior utilization and attentional focus were also collected to assess the integrity of the experimental manipulations. Consistent with prediction, those encouraged to utilize safety-behaviors during exposure showed significantly more fear at post-treatment and follow-up relative to those encouraged to focus and reevaluate their core threat(s) during exposure. Moreover, growth curve analyses of treatment process data analyses revealed that safety-behavior utilization exerted a detrimental effect on between-trial habituation; whereas guided threat reappraisal enhanced between-trial habituation.     

A four-component model of procedural justice: defining the meaning of a "fair" process

Two studies test the prediction of the four-component model of procedural justice that people evaluate the fairness of group procedures using four distinct types of judgment. The model hypothesizes that people are influenced by two aspects of the formal procedures of the group: those aspects that relate to decision making and those that relate to the quality of treatment that group members are entitled to receive under the rules. In addition, people are hypothesized to be separately influenced by two aspects of the authorities with whom they personally deal: the quality of decision making by those authorities and the quality of the treatment that they receive from them. The results of two studies support the hypothesis of the four-component model by finding that all four of the procedural judgments identified by the model contribute to overall evaluations of the fairness of group procedures.     

A critique of Plomin and Foch's "A Twin Study of Objectively Assessed Personality in Childhood"

Plomin and Foch's (1980) study of objectively assessed personality in childhood is critiqued on five points: (a) conceptual validity of the measures, (b) stability of the measures for the population age range, (c) comparability of populations, (d) accuracy of literature review, and (e) appropriate interpretation of broad heritability data. The Plomin and Foch study contains major errors; it is theoretically and methodologically flawed. Their report is especially significant because it is representative of problems critical to the study of the genetic correlates of personality.     

The role of mental relaxation in experimental desensitization

Certain evidence indicates that training in peripheral muscle relaxation is not an essential factor in the successful experimental desensitization of phobias. Rachman (1968) has suggested that a sense of calmness or mental relaxation is the necessary component and that all the preliminary training techniques leading to successful desensitization, have, as the basis for their success, the inadvertent induction of this state of mental calmness. The direct induction of mental relaxation then, ought to be at least as effective an adjunct to desensitization as training in muscle relaxation. Using spider phobia as the target behaviour, the present study compared the effectiveness of (a) hierarchy presentation paired with deep muscle relaxation; (b) hierarchy presentation paired with instructions to feel calm and relaxed and alternated with imagining a pleasant scene; (c) a combination of these two procedures paired with hierarchy presentation; and (d) a placebo control procedure. The treatment groups all improved significantly more than controls and there there were no differences between treatments. The results were seen as offering strong support of Rachman's position. Both theoretical and practical implications of the results are discussed with consideration being given to the nature of “mental calmness”.     

Skills training and self-administered desensitization in the reduction of public speaking anxiety.

The aim is to test the following hypotheses. Since desensitization targets only “feelings” of anxiety, and skills training targets only overt behaviors, the predictions based on the earlier findings (Marshall, Presse and Andrews, 1976; Paul, 1966) are as follows: (a) the combination of skills training and desensitization will be more effective than desensitization alone, but no more effective than skills training alone, in reducing behavioral manifestations of anxiety; (b) the combination will be more effective than skills training alone, but no more effective than desensitization alone, in reducing subjective distress; (c) skills training will be more effective than desensitization in reducing behavioral manifestations of anxiety; and (d) desensitization will be more effective than skills training in reducing subjective distress.     

Social "facilitation" as challenge and threat.

The authors conducted an experiment to test a theoretical explanation of social facilitation based on the biopsychosocial model of challenge and threat. Participants mastered 1 of 2 tasks and subsequently performed either the mastered (i.e., well-learned) or the unlearned task either alone or with an audience while cardiovascular responses were recorded. Cardiovascular responses of participants performing a well-learned task in the presence of others fit the challenge pattern (i.e., increased cardiac response and decreased vascular resistance), whereas cardiovascular responses of participants performing an unlearned task in the presence of others fit the threat pattern (i.e., increased cardiac response and increased vascular resistance), confirming the authors' hypotheses and the applicability of the biopsychosocial model of challenge and threat to explain these results.