Publications by authors named "Robert D Zettle"

The comparative incremental validity of five self-as-context measures in predicting psychological distress and satisfaction with life, after controlling for relevant demographic variables and other psychological flexibility processes, was evaluated in a college student sample ( = 315). All of the measures except the self-as-context subscale of the Multidimensional Psychological Flexibility Inventory (Rolffs et al., 2018) separately accounted for a significant increase in variability in psychological distress.

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Increased emphasis has been placed on elucidating the contribution of client variables, such as treatment preference, to optimize evidence-based practice. This analog study sought to better understand variables associated with treatment preference using a convenience sample of college students ( = 54) who read brief descriptions of three interventions for negative thoughts-defusion, noticing, and restructuring. They rated each on acceptability and practicality and completed measures of cognitive fusion, emotional distress, and experiential avoidance as possible moderating variables.

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Process-based cognitive behavior therapy (PB-CBT) may be informed by identifying shared mechanisms of disorder linked to shared processes of therapeutic change. Repetitive negative thinking (RNT) is a molar pathogenic process common to both generalized anxiety disorder and depression. Acceptance and commitment therapy (ACT) and metacognitive therapy (MCT) offer separate models of the relationship between RNT and emotional distress.

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The relative ability of four comedic sketches to induce amusement in the laboratory and its moderation by dispositional differences in experiential approach as a form of positive emotion regulation were investigated. College student participants reported significant and equivalent diminished levels of negative affect relative to baseline following each sketch, while the level of positive affect induced by exceeded that elicited by two of the three other sketches as well as by a top-ranked French comedic film clip. Regression models indicated that the two subscales of the Experiential Approach Scale and their interaction accounted for significant variability in negative mood reductions following the sketches.

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Relapse rates following a depressive episode are high, with limited treatments available aimed at reducing such risk. Acceptance and commitment therapy (ACT) is a cognitive-behavioral approach that has gained increased empirical support in treatment of depression, and thus represents an alternative in relapse prevention. Psychological flexibility (PF) plays an important role in mental health according to the model on which ACT is based.

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Depression is a highly recurrent disorder with limited treatment alternatives for reducing risk of subsequent episodes. Acceptance and commitment therapy (ACT) and attention bias modification (ABM) separately have shown some promise in reducing depressive symptoms. This study investigates (a) if group-based ACT had a greater impact in reducing residual symptoms of depression over a 12-month follow-up than a control condition, and (b) if preceding ACT with ABM produced added benefits.

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The ability to adequately evaluate medications in the treatment of paraphilias has been limited by reliance upon self-report as a measure of effectiveness over periods of time that may be too short to detect reoffending. One solution to this shortcoming is the development of valid, long-term, stable assessment measures. The purpose of this case study was to analyze the effects of Prozac and Provera on an array of behaviors germane to the successful treatment of paraphilias, including: (a) sexual arousal in the laboratory and natural environment, (b) sexual thoughts (deviant and nondeviant) accompanied by arousal in the natural environment, and (c) overt actions in the community associated with increased risk of reoffending over a 31-month period for an exhibitionist with an intellectual disability.

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Derealization and depersonalization and are commonly experienced by individuals with panic disorder. Although interoceptive exposure (IE) is a key therapeutic component in the treatment of panic disorder, there currently are few recognized ways to elicit reactions that successfully mimic dissociative symptoms commonly experienced during panic. We examined the ability of several novel methods that elicit anomalous and confusing perceptual experiences to induce at least moderately intense dissociative reactions in a college student sample ( = 34).

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The generalization of relapse-prevention skills of 10 males residing at a state facility for sexual offenders diagnosed with an intellectual disability was assessed in the community using three different experimental probes: (a) treatment staff (TS), (b) nontreatment staff (NTS), and (c) community adults (CAs). Results indicated a decrease in compliance from the TS to NTS and CAs, with the lowest levels of generalization displayed by offenders who were older and displayed a wider range of paraphilias. The degree of generalization also varied as a function of the contingencies for prevention-plan noncompliance, with higher rates of generalization occurring for violations that were more severely consequated.

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The present research describes the development and psychometric evaluation of a second version of the Acceptance and Action Questionnaire (AAQ-II), which assesses the construct referred to as, variously, acceptance, experiential avoidance, and psychological inflexibility. Results from 2,816 participants across six samples indicate the satisfactory structure, reliability, and validity of this measure. For example, the mean alpha coefficient is .

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Several articles have recently questioned the distinction between acceptance and commitment therapy (ACT) and traditional cognitive therapy (CT). This study presents a reanalysis of data from Zettle and Rains that compared 12 weeks of group CT with group ACT. For theoretical reasons, Zettle and Rains also included a modified form of CT that did not include distancing, and no intent-to-treat analysis was included.

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