This study aims to investigate the mediating role of rumination in the relationship between perfectionism and psychological distress, by proposing a cognitive-behavioral intervention targeting rumination. This intervention aims at decreasing - or even neutralizing - the effect of the mediator and then examining how this decrease impacts the relationship between perfectionism and psychological distress. A randomized, concurrent, multiple-baseline single-case design will be applied.
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Perfectionism - Hewitt and Flett's Multidimensional Perfectionism Scale (HMPS; Hewitt & Flett,1991)
Timeframe: For the recruitment, i.e. until the number of 6 participants is reached for the second wave of the study (approximately two months after the beginning of the study)
Perfectionism - Hewitt and Flett's Multidimensional Perfectionism Scale (HMPS; Hewitt & Flett,1991)
Timeframe: The day before the beginning of the intervention
Perfectionism - Hewitt and Flett's Multidimensional Perfectionism Scale (HMPS; Hewitt & Flett,1991)
Timeframe: Once participants have completed 4 sessions of the intervention, about a week and a half after the beginning of the intervention
Perfectionism - Hewitt and Flett's Multidimensional Perfectionism Scale (HMPS; Hewitt & Flett,1991)
Timeframe: Two weeks after the end of the intervention
Perfectionism - Hewitt and Flett's Multidimensional Perfectionism Scale (HMPS; Hewitt & Flett,1991)
Timeframe: Three months after the end of the intervention
Perfectionism - Frost, Marten, Lahart, and Rosenblate's Multidimensional Perfectionism Scale (FMPS; Frost, Marten, Lahart, and Rosenblate, 1990)
Timeframe: For the recruitment, i.e. until the number of 6 participants is reached for the second wave of the study (approximately two months after the beginning of the study)
Perfectionism - Frost, Marten, Lahart, and Rosenblate's Multidimensional Perfectionism Scale (FMPS; Frost, Marten, Lahart, and Rosenblate, 1990)
Timeframe: The day before the beginning of the intervention
Perfectionism - Frost, Marten, Lahart, and Rosenblate's Multidimensional Perfectionism Scale (FMPS; Frost, Marten, Lahart, and Rosenblate, 1990)
Timeframe: Once participants have completed 4 sessions of the intervention, about a week and a half after the beginning of the intervention
Perfectionism - Frost, Marten, Lahart, and Rosenblate's Multidimensional Perfectionism Scale (FMPS; Frost, Marten, Lahart, and Rosenblate, 1990)
Timeframe: Two weeks after the end of the intervention
Perfectionism - Frost, Marten, Lahart, and Rosenblate's Multidimensional Perfectionism Scale (FMPS; Frost, Marten, Lahart, and Rosenblate, 1990)
Timeframe: Three months after the end of the intervention
Depression - Center for Epidemiologic Studies - Depression (CES-D; Radloff, 1997)
Timeframe: For the recruitment, i.e. until the number of 6 participants is reached for the second wave of the study (approximately two months after the beginning of the study)
Depression - Center for Epidemiologic Studies - Depression (CES-D; Radloff, 1997)
Timeframe: The day before the beginning of the intervention
Depression - Center for Epidemiologic Studies - Depression (CES-D; Radloff, 1997)
Timeframe: Once participants have completed 4 sessions of the intervention, about a week and a half after the beginning of the intervention
Depression - Center for Epidemiologic Studies - Depression (CES-D; Radloff, 1997)
Timeframe: Two weeks after the end of the intervention
Depression - Center for Epidemiologic Studies - Depression (CES-D; Radloff, 1997)
Timeframe: Three months after the end of the intervention
Anxiety - Generalized Anxiety Disorder Screener (GAD-7; Spitzer, Kroenke, Williams, Löwe, 2008)
Timeframe: For the recruitment, i.e. until the number of 6 participants is reached for the second wave of the study (approximately two months after the beginning of the study)
Anxiety - Generalized Anxiety Disorder Screener (GAD-7; Spitzer, Kroenke, Williams, Löwe, 2008)
Timeframe: The day before the beginning of the intervention
Anxiety - Generalized Anxiety Disorder Screener (GAD-7; Spitzer, Kroenke, Williams, Löwe, 2008)
Timeframe: Once participants have completed 4 sessions of the intervention, about a week and a half after the beginning of the intervention
Anxiety - Generalized Anxiety Disorder Screener (GAD-7; Spitzer, Kroenke, Williams, Löwe, 2008)
Timeframe: Two weeks after the end of the intervention
Anxiety - Generalized Anxiety Disorder Screener (GAD-7; Spitzer, Kroenke, Williams, Löwe, 2008)
Timeframe: Three months after the end of the intervention
Rumination trait - Repetitive Thinking Mode Questionnaire (RTMQ; Philippot, Verschuren, & Douilliez, in press).
Timeframe: For the recruitment, i.e. until the number of 6 participants is reached for the second wave of the study (approximately two months after the beginning of the study)
Rumination trait - Repetitive Thinking Mode Questionnaire (RTMQ; Philippot, Verschuren, & Douilliez, in press).
Timeframe: The day before the beginning of the intervention
Rumination trait - Repetitive Thinking Mode Questionnaire (RTMQ; Philippot, Verschuren, & Douilliez, in press).
Timeframe: Once participants have completed 4 sessions of the intervention, about a week and a half after the beginning of the intervention
Rumination trait - Repetitive Thinking Mode Questionnaire (RTMQ; Philippot, Verschuren, & Douilliez, in press).
Timeframe: Two weeks after the end of the intervention
Rumination trait - Repetitive Thinking Mode Questionnaire (RTMQ; Philippot, Verschuren, & Douilliez, in press).
Timeframe: Three months after the end of the intervention
Autobiographical Memory - The computerized version of the Autobiographical Memory Test (AMT; Williams et Broadbent, 1986).
Timeframe: The day before the beginning of the intervention
Autobiographical Memory - The computerized version of the Autobiographical Memory Test (AMT; Williams et Broadbent, 1986).
Timeframe: Once participants have completed 4 sessions of the intervention, about a week and a half after the beginning of the intervention
Autobiographical Memory - The computerized version of the Autobiographical Memory Test (AMT; Williams et Broadbent, 1986).
Timeframe: Two weeks after the end of the intervention
Autobiographical Memory - The computerized version of the Autobiographical Memory Test (AMT; Williams et Broadbent, 1986).
Timeframe: Three months after the end of the intervention
Multiple measures of Rumination state - State Repetitive Thoughts Questionnaire (SRTQ; Philippot et al., n.d.).
Timeframe: before the beginning of the intervention
Measure of change - Multiple measures of Rumination state - State Repetitive Thoughts Questionnaire (SRTQ; Philippot et al., n.d.).
Timeframe: Each day during the intervention, as well as between each week of the intervention
Measure of change - Multiple measures of Rumination state - State Repetitive Thoughts Questionnaire (SRTQ; Philippot et al., n.d.).
Timeframe: During two weeks after the end of the intervention, to assess the change from the 3-week intervention
Daily positive and negative emotions - Visual Analog Mood Scale (VAMS; McNally, Litz, Prassas, Shin, & Weathers, 1994).
Timeframe: before the beginning of the intervention.
Measure of change - Daily positive and negative emotions - Visual Analog Mood Scale (VAMS; McNally, Litz, Prassas, Shin, & Weathers, 1994).
Timeframe: Each day of the three-week intervention, to assess changes between the 10-day A-baseline phase and the intervention phase, as well as between each week of the intervention
Measure of change - Daily positive and negative emotions - Visual Analog Mood Scale (VAMS; McNally, Litz, Prassas, Shin, & Weathers, 1994).
Timeframe: During two weeks after the end of the intervention, to assess the change from the 3-week intervention