Guilt and Expressive Writing for Reducing Alcohol Use in College Students
NCT ID: NCT02927132
Last Updated: 2018-06-20
Study Results
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Basic Information
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UNKNOWN
NA
600 participants
INTERVENTIONAL
2016-09-30
2020-08-31
Brief Summary
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H1a: Participants writing about negative drinking events will show reduced drinking and drinking-related negative consequences relative to students in the neutral control group.
H1b: Participants writing about distressing non-alcohol events will show increased psychological wellbeing relative to students in the neutral control group.
H1c: Participants writing about negative drinking events will show reduced drinking and consequences compared with an empirically-supported brief intervention (i.e., PNF). This is an exploratory hypothesis.
H2a: Alcohol narratives will have stronger effects on alcohol outcomes relative to distress narratives.
H2b: Alcohol guilt narratives will have the strongest effect on alcohol outcomes relative to all other conditions.
H3a: Expression of guilt, assessed by self-report and by content coding with LIWC, will mediate intervention effects on drinking outcomes.
H3b: Change thought, assessed by LIWC coding, will mediate intervention effects on drinking.
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Detailed Description
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This research consists of an intervention study to evaluate expressive writing as a brief intervention in reducing drinking and improving psychological well-being among college students. Participation in the study involves completion of a screening assessment, a baseline assessment, the intervention procedure, post-intervention assessment, and follow-up assessments at 1-, 3-, 6-, and 12-months. Heavy drinking college students (N = 600) will be randomly assigned to one of six conditions based on the 2 (alcohol vs. distress topics) × 2 (guilt vs. no guilt focus) + 1 (neutral control) + 1 (personalized normative feedback) design. Before completing the baseline survey, students will be randomly assigned to one of six study conditions, five of which involve writing during three sessions over the course of one month. Specifically, participants will be assigned to write about a heavy drinking event, a heavy drinking event that elicited guilt, a distressing event, a distressing event that elicited guilt, or their first day of college (neutral control condition).
Participants randomly assigned to the PNF condition will receive traditional personalized normative feedback regarding how their drinking compares with other students of the same gender at the university. The norms will come from a large recently completed alcohol survey conducted at the University of Houston examining social norms and alcohol prevention (R01AA014576). To maintain consistency across conditions, participants in the PNF condition will still come into the lab three times. They will receive feedback during the first intervention session and will be asked to complete the same narrative prompts as the neutral control condition for their second and third session. For individuals in the expressive writing conditions, there will be three narrative prompts to complete every week for three weeks, the first of which will occur following the baseline assessment. All baseline assessments, narrative intervention assignments, and immediate post-tests for all conditions will be conducted in-lab. All other assessments including screening and follow-up assessments will be completed remotely by web. The rationale for including a personalized normative feedback condition is to be able to compare the efficacy of expressive writing interventions with existing brief alcohol interventions. Thus, the present design allows not only for evaluation of efficacy relative to a control condition but also will evaluate comparative efficacy relative to an existing empirically-supported brief alcohol intervention.
Aims will be evaluated using multi-level regression analyses, often referred to as Hierarchical Linear Modeling (HLM) or mixed-effects modeling. With respect to evaluating main effects of experimental conditions on drinking, each participant will provide baseline, post-intervention, 1-month, 3-month, 6-month, and 12-month follow-up data. Hypotheses will be tested using specific contrast vectors, using a general linear hypothesis framework. The study consists of a (2×2+1+1) design, represented as a factorial design with the addition of a control group that will write about their first day of school and a computer-based PNF comparison group. Hypotheses will be tested with contrasts corresponding to the questions of interest. The first two hypotheses represent contrasts between the alcohol narrative conditions and the neutral control condition (H1a) and between the guilt narrative conditions and the neutral control condition (H1b). In examining these hypotheses, the investigators will construct two dummy coded variables reflecting alcohol versus non-alcohol narratives conditions and between guilt and non-guilt narrative conditions with the reference group being the neutral control condition. Thus, the PNF group will not be included in the tests of these two hypotheses. Dependent variables will include alcohol outcomes for H1a and psychological well-being for H1b. For these analyses each participant will provide up to 5 repeated measures (i.e., baseline, 1-month, 3-months, 6-months, and 12-months), yielding up to 3000 Level 1 cases (repeated-measures) across 600 Level 2 cases.
The investigators will also evaluate mediators of intervention effects. Additionally, the investigators will follow procedures to assess mediation. Mediation will test indirect effects using the AB products method where A will represent effects of intervention contrasts by time interactions on mediators (expression of guilt and change thought). B will represent the associations of mediators on subsequent drinking outcomes. Both A and B paths will control for baseline outcomes. Evaluation of hypotheses regarding the moderation effect will test whether individual differences in guilt-proneness interact with intervention contrasts. These will be tested by expanding the above model to add main effects and product terms of proposed moderators with intervention contrasts.
Power analyses focus on estimating a sample size large enough to detect "true" effects, thereby avoiding Type II errors. Sample size estimates were obtained for intervention contrasts. Necessary sample sizes were assessed via sample size and power equations for normally distributed outcomes. Effect-sizes and variance components were based on preliminary studies, and power was set at 0.80 for all estimates. Power was estimated using the Optimal Design software program. The investigators anticipate intervention effects relative to the neutral control condition on drinking to be in the range of delta =.30-.40). Based on the proposed sample size of 500 (\~PNF not included in H1a and H1b), given five assessment points, the investigators anticipate the ability to detect main effects of intervention contrasts with power=.80. Considering maximum anticipated attrition rates of 20% the investigators will have .80 power to detect effects sizes of delta = .28 and greater.
Conditions
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Study Design
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RANDOMIZED
FACTORIAL
PREVENTION
SINGLE
Study Groups
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Alcohol-Guilt Condition
In this condition, participants are asked to write about an incident in which they drank heavily and experienced guilt.
Participants in this condition will come into the lab one time each week for three weeks to complete the writing task. They will then complete follow-up surveys remotely, at 1 month, 3 months, 6 months, and 12 months.
Expressive Writing
Expressive writing is a brief intervention that has been linked to various health and social benefits. Expressing emotions through writing can lead to decreased levels of stress and negative affect, thereby serving as a coping mechanism. Furthermore, expressive writing allows participants to reconstruct their traumatic experiences and reorganize their memory of these events into a narrative. Expressive writing has been used to target drinking. Research has found that students have reduced drinking intentions after writing about a negative drinking event compared to control,suggesting that a narrative intervention may be effective in reducing drinking. Other research suggests that feelings of guilt were more strongly associated with intentions to reduce drinking after writing about a negative drinking event, and that this event-related guilt mediated intervention effects.
Distress-Guilt Condition
In this condition, participants are asked to write about an upsetting incident where they experienced guilt.
Participants in this condition will come into the lab one time each week for three weeks to complete the writing task. They will then complete follow-up surveys remotely, at 1 month, 3 months, 6 months, and 12 months.
Expressive Writing
Expressive writing is a brief intervention that has been linked to various health and social benefits. Expressing emotions through writing can lead to decreased levels of stress and negative affect, thereby serving as a coping mechanism. Furthermore, expressive writing allows participants to reconstruct their traumatic experiences and reorganize their memory of these events into a narrative. Expressive writing has been used to target drinking. Research has found that students have reduced drinking intentions after writing about a negative drinking event compared to control,suggesting that a narrative intervention may be effective in reducing drinking. Other research suggests that feelings of guilt were more strongly associated with intentions to reduce drinking after writing about a negative drinking event, and that this event-related guilt mediated intervention effects.
Alcohol-No Guilt Condition
In this condition, participants are asked to write about a negative drinking incident that they had experienced.
Participants in this condition will come into the lab one time each week for three weeks to complete the writing task. They will then complete follow-up surveys remotely, at 1 month, 3 months, 6 months, and 12 months.
Expressive Writing
Expressive writing is a brief intervention that has been linked to various health and social benefits. Expressing emotions through writing can lead to decreased levels of stress and negative affect, thereby serving as a coping mechanism. Furthermore, expressive writing allows participants to reconstruct their traumatic experiences and reorganize their memory of these events into a narrative. Expressive writing has been used to target drinking. Research has found that students have reduced drinking intentions after writing about a negative drinking event compared to control,suggesting that a narrative intervention may be effective in reducing drinking. Other research suggests that feelings of guilt were more strongly associated with intentions to reduce drinking after writing about a negative drinking event, and that this event-related guilt mediated intervention effects.
Distress-No Guilt Condition
In this condition, participants are asked to write about an upsetting experience that has affected their life.
Participants in this condition will come into the lab one time each week for three weeks to complete the writing task. They will then complete follow-up surveys remotely, at 1 month, 3 months, 6 months, and 12 months.
Expressive Writing
Expressive writing is a brief intervention that has been linked to various health and social benefits. Expressing emotions through writing can lead to decreased levels of stress and negative affect, thereby serving as a coping mechanism. Furthermore, expressive writing allows participants to reconstruct their traumatic experiences and reorganize their memory of these events into a narrative. Expressive writing has been used to target drinking. Research has found that students have reduced drinking intentions after writing about a negative drinking event compared to control,suggesting that a narrative intervention may be effective in reducing drinking. Other research suggests that feelings of guilt were more strongly associated with intentions to reduce drinking after writing about a negative drinking event, and that this event-related guilt mediated intervention effects.
Neutral Control Condition
In this condition, participants are asked to write about the laboratory room in which they are seated.
Participants in this condition will come into the lab one time each week for three weeks to complete the writing task. They will then complete follow-up surveys remotely, at 1 month, 3 months, 6 months, and 12 months.
No interventions assigned to this group
Personalized Normative Feedback
Participants in the PNF condition will be given gender-specific personalized feedback regarding their alcohol use. Participants will be presented with the drinking estimates that they previously gave in addition to average gender-specific drinking estimates provided by 1124 students at the University of Houston. Feedback will be provided for drinking frequency (i.e., number of drinking days per week), and drinking quantity (i.e., the number of drinks consumed per week and number of drinks consumed per typical drinking occasion). Participants will also receive a printed a copy of the feedback for their records. PNF participants will receive feedback immediately after the baseline assessment. We also wanted to control for any differences that might be attributed to attention. Thus, participants will be scheduled to come in to the lab for two more sessions, during which time they will write about the laboratory room in which they are seated.
Personalized Normative Feedback
PNF approaches use information designed to correct normative misperceptions to reduce heavy drinking. Three pieces of information are necessary when providing personalized normative feedback: information about a student's own drinking, information about the student's perceptions of others' drinking, and information about others' actual drinking. The presentation of this information is designed to change students' perceptions of "normal" drinking by exposing their misperceptions of the norm as well as by comparing their behavior with "normal" behavior.
Interventions
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Expressive Writing
Expressive writing is a brief intervention that has been linked to various health and social benefits. Expressing emotions through writing can lead to decreased levels of stress and negative affect, thereby serving as a coping mechanism. Furthermore, expressive writing allows participants to reconstruct their traumatic experiences and reorganize their memory of these events into a narrative. Expressive writing has been used to target drinking. Research has found that students have reduced drinking intentions after writing about a negative drinking event compared to control,suggesting that a narrative intervention may be effective in reducing drinking. Other research suggests that feelings of guilt were more strongly associated with intentions to reduce drinking after writing about a negative drinking event, and that this event-related guilt mediated intervention effects.
Personalized Normative Feedback
PNF approaches use information designed to correct normative misperceptions to reduce heavy drinking. Three pieces of information are necessary when providing personalized normative feedback: information about a student's own drinking, information about the student's perceptions of others' drinking, and information about others' actual drinking. The presentation of this information is designed to change students' perceptions of "normal" drinking by exposing their misperceptions of the norm as well as by comparing their behavior with "normal" behavior.
Eligibility Criteria
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Inclusion Criteria
* Being a registered UH student.
* Scoring 5+ and 7+ on the AUDIT-C for women/men respectively
* Being 18-26 years of age
* Being a registered UH student
* Providing consent to participate in the study
18 Years
26 Years
ALL
No
Sponsors
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National Institute on Alcohol Abuse and Alcoholism (NIAAA)
NIH
University of Houston
OTHER
Responsible Party
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Clayton Neighbors
Professor, Director of the Social Influences and Health Behaviors Lab
References
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Other Identifiers
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3660702
Identifier Type: -
Identifier Source: org_study_id
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