The influence of demand characteristics on the outcome of systematic desensitization analogue studies.

48 female undergraduates with high scores on the Snake-Fear Questionnaire participated in either systematic desensitization, sleep therapy, partial systematic desensitization, or no treatment. Sleep therapy and partial systematic desensitization had all of the components of systematic desensitization except pairing the hierarchy and relaxation. However, sleep therapy Ss took the posttreatment fear assessments thinking that relaxation and the hierarchy had been paired while they slept, whereas Ss in partial systematic desensitization took the posttherapy fear assessments with the expectation of subsequently having relaxation paired with the hierarchy. Results indicate that comparable fear reductions were produced by sleep therapy and systematic desensitization. Sleep therapy, however, resulted in more reduction of the Ss' fear responses than partial systematic desensitization. These findings demonstrate that pairing relaxation with the hierarchy was not necessary to achieve reduction of Ss' fear responses, and that operations other than the components of systematic desensitization could influence the outcome of systematic desensitization analog research. Findings support the contention that in analog research a significant amount of the behavior change achieved by systematic desensitization is attributable to the treatment's demand characteristics. (French summary) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Differential ordering of stimulus presentation in systematic desensitization.

50 snake-phobic female Ss were matched on degree of behavioral avoidance and subjective fear and then randomly assigned to 1 of 3 desensitization or 2 control groups: (a) imagined stimuli presented in order of increasing aversiveness, (b) stimuli presented in a decreasingly aversive order, (c) random order presentation, (d) pseudodesensitization, and (e) no-treatment control. Ss in the 3 desensitization groups showed significantly greater improvement than did Ss in either control group. While no differences were found between Ss exposed to an increasingly aversive hierarchy and Ss who received a decreasing order, the random order tended to be less effective than the other 2. An ascending aversive order of stimulus presentations is not an essential and integral part of successful desensitization. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Desensitization, suggestibility, and pseudotherapy.

44 snake phobic Ss participated in laboratory experiments assessing the degree of fear change associated with systematic desensitization, no treatment, placebo treatment, and the trait of suggestibility. Desensitization Ss showed significantly greater fear reduction than controls, while placebo Ss changed no more than did untreated Ss. Successful desensitization was relatively independent of suggestibility. Desensitization of specific fears generalized positively to other fears, and among desensitization Ss, degree of fear change could be predicted from measurable aspects of therapy process. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of relaxation as self-control and systematic desensitization in the treatment of test anxiety.

Relaxation as self-control and desensitization were compared to a waiting-list control in the reduction of test and other anxieties in 43 undergraduates. Neither active treatment differed significantly from the other, but they did differ significantly from the control treatment on several variables. Ss in both treatments reported less debilitating test anxiety, whereas desensitization Ss showed greater facilitating test anxiety. Under stressful conditions, treated Ss were less worried and anxious, found the situation less aversive, and perceived themselves and their abilities more favorably than controls. Significant reductions in nontargeted anxieties suggested transfer of anxiety-management skills to areas other than test anxiety. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Role of expectancy manipulation in systematic desensitization.

Manipulated expectancy, relaxation, and hierarchy content in a 2 * 2 design with 2 additional control groups. Ss were 76 spider-phobic undergraduates. It was hypothesized that a major portion of therapeutic change following desensitization could be accounted for by the Ss' responses to positive feedback inherent in the paradigm. Ss saw either photographs of spiders or blank slides that they believed to be tachistoscopically-presented pictures of spiders. One-half of the Ss believed their progress through the hierarchy to be contingent on autonomic responses; the others believed rate of progress to be random. Findings did not support the hypothesis that expectancy is the only factor in desensitization, but they did clarify the role of expectancy vis-a-vis the counterconditioning elements typically discussed in the literature. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Experimental desensitization of phobia.

24 snake phobic Ss participated in an experimental investigation of systematic desensitization therapy. Ss who experience desensitization showed a greater reduction in phobic behavior (as measured by avoidance behavior in the presence of the phobic object and self-ratings) than did nonparticipating controls. Ss tended to hold or increase therapy gains at a 6-month follow-up evaluation, and gave no evidence of symtom substitution. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Selective recall of positive and negative feedback, self-control behaviors, and depression.

Tested 2 sets of hypotheses, derived from cognitive–behavioral theories of depression, that (a) compared to a sample of nondepressed controls, depressed Ss would underestimate the frequency of reinforcement and overestimate the frequency of punishment received during an ambiguous laboratory task; and (b) when given the opportunity to self-reinforce or self-punish, depressed Ss would self-reinforce less often and self-punish more often than controls. Three of these predictions were supported. In an experiment with 24 depressed and 21 nondepressed undergraduates (Beck Depression Inventory), depressed Ss recalled less positive and more negative feedback than controls. As expected, these differences were significant only at a high rate of reinforcement and at a low rate of punishment. In the latter condition, however, depressed Ss were accurate in their recall, while nondepressed Ss underestimated the frequency of negative feedback. Depressed Ss self-reinforced less often than controls, but there were no differences in rates of self-punishment. Implications for cognitive and behavioral theories of depression are discussed. (22 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Contribution of pretesting to several measures of semantic desensitization effectiveness.

32 snake- or spider-phobic Ss were randomly assigned to 1 of 4 groups: pretest–posttest therapy, posttest-only therapy, pre–post control, or post-only control. Ss receiving semantic desensitization therapy showed less posttest anxiety on the semantic differential than controls regardless of testing condition. However, therapy Ss demonstrated less anxiety on a fear survey, a fear thermometer, and a behavioral approach test only in the pretest–posttest condition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Extinction versus credibility in the desensitization of speech anxiety.

Compared systematic desensitization with 2 control treatments—a nonextinction control procedure in which visualizations of hierarchy items were paired with an aversive shock, and a placebo treatment equal to desensitization in credibility. 97 undergraduates with public speaking anxiety (Personal Report of Confidence As a Speaker) served as Ss. Significant improvement was obtained for all 3 conditions on all outcome measures. Data indicate that Ss in all 3 conditions improved more than minimal treatment, simulation, and high-demand no-treatment-control Ss. Analyses failed to uncover any significant between-group differences. On 2 self-report measures, Ss' pretreatment ratings of treatment credibility accounted for significant and substantial proportions of the variance (12.6 and 36.5%). Data support the influence of perceived treatment credibility on outcome measures, and they tend to disconfirm conditioning explanations of the efficacy of systematic desensitization. A significant difference in treatment credibility ratings between actual Ss and pretest pilot Ss was also noted, suggesting the advisability of checking credibility manipulations with Ss who believe that they are to receive the treatment described in the rationale. (24 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Systematic desensitization: Expectancy change or counterconditioning?

Exposed 44 snake and spider phobic undergraduates to either (1) a form of systematic desensitization treatment; (2) a technique, called T-scope therapy, which embodies most of the expectancy-manipulating features of desensitization, but does not contain the technical elements of the procedure, i.e., relaxation, visualization, and the construction of an anxiety hierarchy, (3) T-scope therapy, presented as an "incomplete" and probably ineffective form of treatment; or (4) no treatment. There was no significant differences (on self-rating, runway, or interview measures) between the effects of the systematic desensitization procedure and T-scope therapy, although Ss receiving either of these treatments improved significantly more than those who received no treatment or T-scope therapy administered under the "low-expectancy" condition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Interpersonal competence among college males hypothesized to be at risk for schizophrenia.

Compared the interpersonal competence of undergraduate males hypothesized on the basis of scores on 4 scales designed to identify schizophrenia-prone individuals to be at elevated risk for schizophrenia with male control undergraduates in 2 studies. In Study 1, 96 high-risk Ss were compared with 60 controls on a behavioral measure requiring them to role play responses to problem situations. Results show that responses of anhedonic Ss were significantly less competent and more terse than were those of controls. Responses of impulsive, nonconforming Ss were significantly more hostile and more odd than controls' responses. In Study 2, 78 high-risk Ss and 33 controls used a multiple-choice version of the problem inventory. Results show that nonconforming Ss were significantly less able than controls to recognize competent responses and were significantly more likely than controls to select hostile response alternatives. It is suggested that the interpersonal behaviors of anhedonic and nonconforming Ss were consistent with their designation as high-risk individuals and potentially important to their later adjustment. (20 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effectiveness of structured psychodrama and systematic desensitization in reducing test anxiety.

36 students with examination anxiety took part in a study of the effectiveness of structured psychodrama and systematic desensitization in reducing test anxiety. Ss were randomly assigned to psychodrama, desensitization, or no-treatment control groups. All Ss were tested before and after the treatments on the Suinn Test Anxiety Behavior Scale and the Neuroticism scale of the Eysenck Personality Inventory. Results show that Ss in both treatment groups significantly reduced their test-anxiety scores compared with the controls. This was also congruent with gains as tested in vivo. A comparison between the 2 treatments, however, shows no significant differences. Also, there were no statistical differences among the 3 groups in neuroticism either before or after the treatments. It is concluded that the structured psychodrama method is as effective a mode of counseling as systematic desensitization in treating test anxiety. (21 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Behavioral responsiveness of adrenalectomized, hypophysectomized, and intact rats to electric shock.

Tested whether the altered rates of acquisition and extinction of avoidance behavior in adrenalectomized and hypophysectomized rats are associated with abnormal responsiveness to electric shock. The electrical threshold for flinch, jump, and vocalization behaviors in adrenalectomized and hypophysectomized Ss (N = 95) was measured in 2 experiments. Adrenalectomized Ss had higher thresholds for flinch and jump responses than hypophysectomized Ss, and also a higher flinch threshold than weight-matched controls. Hypophysectomized Ss had normal thresholds for all 3 behaviors. The difference in threshold for the flinch response between adrenalectomized and hypophysectomized or normal Ss was not explained by differences in body weight, although heavy Ss responded less to electric shock than light Ss. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reactions of internal and external test-anxious students to counseling and behavior therapies.

Studied the responses of 36 test-anxious students, who differed on Rotter's Internal-External Control Scale, to 3 forms of therapy (counseling, systematic desensitization, and automated desensitization). Support was obtained for the prediction that internal Ss would show greater resistance to the control implied in the 2 behavior therapies than external Ss. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Two self-control procedures in the reduction of targeted and nontargeted anxieties.

Compared the effects of relaxation as self-control and a self-control variant of systematic desensitization (SD) in reducing targeted (test anxiety) and nontargeted anxieties with those of wait-list and no-treatment expectancy controls; 12 male and 57 female undergraduates were Ss. Immediately following counseling and at follow-up, groups given relaxation as self-control and SD both reported significantly less debilitating test anxiety and significantly more facilitating test anxiety than controls. In a stressful analog testing condition, self-control groups reported significantly less worry, emotionality, and state test anxiety than controls. While no performance differences were found in the analog situation, relaxation as self-control and modified SD Ss had significantly higher psychology grades than the no-treatment expectancy group. Grades of the wait-list group were not significantly different from those of other groups. The relaxation as self-control group showed reduction and maintenance on both measures of nontargeted anxiety relative to the controls. The modified SD group showed posttreatment reduction on both nontargeted anxiety measures but maintenance on only one. (30 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Fear reduction in the rat following central cholinergic blockade.

In the presence of a natural predator, cat, 92 male Long-Evans hooded rats (in 2 experiments) showed a constellation of responses that was used to define fear: freezing, avoiding the cat, and suppressing consummatory behavior. Compared with controls, Ss treated with an anticholinergic drug, scopolamine, showed significantly less freezing and significantly more approach to the cat; further, these Ss actually engaged in consummatory behavior in proximity to the cat. On a 2nd, undrugged exposure to the cat, the original scopolamine-treated Ss continued to show significantly less freezing, more approach, and more drinking than control Ss. Since methyl scopolamine, which mimics the peripheral actions of scopolamine, had no effect on fear responses, these results implicate a central cholinergic system in fear responses or species-typical defense reactions. (24 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Guided mastery and performance desensitization treatments for severe acrophobia.

Compared 2 models of phobia treatment: the desensitization model, which emphasizes extinction of conditioned anxiety responses by exposing people to feared stimuli at low levels of anxiety arousal, and the self-efficacy model, which emphasizes building a strong sense of mastery by helping people accomplish new tasks rapidly and assuredly. 38 height phobics (aged 22–68 yrs) were assigned randomly to 1 of 3 treatment conditions: guided mastery treatment based on self-efficacy theory, performance desensitization treatment, and no treatment. Although desensitization Ss received significantly longer exposure to threats than guided mastery Ss, guided mastery treatment proved to be significantly more effective than desensitization treatment in restoring Ss' behavioral functioning, in raising their perceptions of self-efficacy, and in reducing their anticipated anxiety and thoughts of danger. Results support the hypothesis that perceptions of self-efficacy are influential mediators of treatment effects. Perceived self-efficacy predicted therapeutic outcome more accurately than did anxiety arousal, anticipated anxiety, or perceived danger. (40 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The importance of the therapeutic relationship in systematic desensitization.

To determine the importance of therapist warmth in effecting positive behavior change using systematic desensitization, 23 female snake-phobic undergraduates were assigned to 1 of 3 groups: warm therapist, cold therapist, or no-treatment controls. Ss in each group were matched on initial Snake Avoidance Test scores. Posttreatment evaluation on the Snake Avoidance Test occurred after 6 20-min desensitization sessions and follow-up scores were obtained 21/2 mo later. Results show that the warm therapist group improved significantly more than either the cold therapist or control group, with no significant differences between these latter 2 groups. Results suggest that therapist warmth is an important variable in systematic desensitization. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of cue-controlled desensitization, rational restructuring, and a credible placebo in the treatment of speech anxiety.

Compared the efficacy of cue-controlled desensitization and systematic rational restructuring with a placebo method (subconscious reconditioning) and a waiting-list control in reducing public speaking and nontargeted anxieties. Ss were 57 undergraduates. Cue-controlled desensitization was generally more effective than the other groups in reducing subjective speech anxiety. In general, no differential between-groups changes emerged on treatment generalization or behavioral speech anxiety measures. Although rational restructuring produced few significant pre–post changes, it did lead to significant gains on several measures by follow-up. On treatment credibility ratings, the placebo was initially perceived as less credible than rational restructuring, but this difference diminished by the middle of treatment. (12 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Two self-control procedures in the reduction of targeted and nontargeted anxieties: A year later.

Reports a 12-mo follow-up of a study by the authors (see record 1979-29126-001) that investigated the effects of self-control interventions on targeted (test) and nontargeted anxieties. One yr after the initial 6-wk follow-up, relaxation-as-self-control and modified-desensitization groups showed maintenance of reductions in debilitating test anxiety and continued to report significantly less debilitating test anxiety than the no-treatment control group. No significant differences among groups were found for either facilitating test anxiety or GPAs. Both self-control groups tended to show maintenance of nontargeted anxiety reductions, with relaxation-as-self-control Ss reporting significantly less nontargeted anxiety than controls; the differences on nontargeted anxiety measures only approached significance for Ss in the modified desensitization condition. (12 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)