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Dive into the research topics where Max Guyll is active.

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Featured researches published by Max Guyll.


Personality and Social Psychology Bulletin | 2001

Ethnic and National Stereotypes: The Princeton Trilogy Revisited and Revised

Stephanie Madon; Max Guyll; Kathy Aboufadel; Eulices Montiel; Alison Smith; Polly Palumbo; Lee Jussim

Three studies assessed changes in the content, consensus, and favorableness of 10 ethnic and national stereotypes by replicating and extending the Princeton trilogy. Results indicated that throughout the past 60 years, almost all of the ethnic and national stereotypes that were examined had changed in content, and more than half had changed in consensus. Most changes in consensus reflected increases rather than decreases, suggesting that modern members of stereotyped groups may confront stereotypes more frequently than did previous members of stereotyped groups. However, the damaging effects that consensual stereotypes can have on members of these groups may be tempered by the finding that most of the stereotypes became more favorable. These results are discussed in terms of changing social roles, intergroup contact, and stereotype accuracy.


Journal of Consulting and Clinical Psychology | 2009

Universal intervention effects on substance use among young adults mediated by delayed adolescent substance initiation.

Richard Spoth; Linda Trudeau; Max Guyll; Chungyeol Shin; Cleve Redmond

In this article, the authors examine whether delayed substance initiation during adolescence, achieved through universal family-focused interventions conducted in middle school, can reduce problematic substance use during young adulthood. Sixth-grade students enrolled in 33 rural midwestern schools and their families were randomly assigned to 3 experimental conditions. Self-report questionnaires provided data at 7 time points for the Iowa Strengthening Families Program (ISFP), Preparing for the Drug Free Years (PDFY), and control groups through young adulthood. Five young adult substance frequency measures (drunkenness, alcohol-related problems, cigarettes, illicit drugs, and polysubstance use) were modeled as distal outcomes affected by the average level and rate of increase in substance initiation across the adolescent years in latent growth curve analyses. Results show that the models fit the data and that they were robust across outcomes and interventions, with more robust effects found for ISFP. The addition of direct intervention effects on young adult outcomes was not supported, suggesting long-term effects were primarily indirect. Relative reduction rates were calculated to quantify intervention-control differences on the estimated proportion of young adults indicating problematic substance use; they ranged from 19% to 31% for ISFP and from 9% to 16% for PDFY.


Prevention Science | 2006

Universality of Effects: An Examination of the Comparability of Long-Term Family Intervention Effects on Substance Use Across Risk-Related Subgroups

Richard Spoth; Chungyeol Shin; Max Guyll; Cleve Redmond; Kari Azevedo

This study extends earlier investigation of family risk-related moderation of two brief, family-focused preventive interventions. It examines effects on the trajectories of substance initiation over a period of six years after a pretest assessment, evaluating whether effects were comparable across higher- and lower-risk subgroups. The two interventions, designed for general-population families of adolescents, were the seven-session Iowa Strengthening Families Program (ISFP) and the five-session Preparing for the Drug Free Years program (PDFY). Thirty-three rural public schools were randomly assigned to either the ISFP, the PDFY, or a minimal contact control condition. Curvilinear growth curve analyses were used to evaluate the universality of intervention effectiveness by testing for risk moderation of intervention effects on school-level substance use trajectories of initiation of alcohol and illicit substance use. Results were most consistent with the interpretation that both interventions provided comparable benefits for both outcome measures, regardless of family risk status. Findings are discussed in terms of their implications for implementing universal preventive interventions in general populations.


The Journal of Primary Prevention | 2003

The Effects of Incentives and Research Requirements on Participation Rates for a Community-Based Preventive Intervention Research Study

Max Guyll; Richard Spoth; Cleve Redmond

This investigation utilized prospective survey data to examine the influence of a research incentive (


American Journal of Community Psychology | 2011

Six-Year Sustainability of Evidence-Based Intervention Implementation Quality by Community-University Partnerships: The PROSPER Study

Richard Spoth; Max Guyll; Cleve Redmond; Mark T. Greenberg; Mark E. Feinberg

100) and requirement (videotaping) on decisions to participate in prevention research. Individuals were significantly attracted by the incentive, and marginally deterred by the requirement. Interaction analyses revealed that the positive incentive effect was stronger among prospective participants with less education and who were otherwise less likely to participate. These findings indicate that monetary incentives can be useful for increasing participation rates, and may help reduce sampling bias by increasing rates most strongly among individuals who are typically less likely to take part in research projects.


Journal of Family Psychology | 2004

Family-focused preventive interventions: evaluating parental risk moderation of substance use trajectories.

Max Guyll; Richard Spoth; Wei Chao; K. A. S. Wickrama; Daniel W. Russell

There is a knowledge gap concerning how well community-based teams fare in implementing evidence-based interventions (EBIs) over many years, a gap that is important to fill because sustained high quality EBI implementation is essential to public health impact. The current study addresses this gap by evaluating data from PROSPER, a community-university intervention partnership model, in the context of a randomized-control trial of 28 communities. Specifically, it examines community teams’ sustainability of implementation quality on a range of measures, for both family-focused and schoolbased EBIs. Average adherence ratings approached 90% for family-focused and school-based EBIs, across as many as 6 implementation cohorts. Additional indicators of implementation quality similarly showed consistently positive results. Correlations of the implementation quality outcomes with a number of characteristics of community teams and intervention leaders were calculated to explore their potential relevance to sustained implementation quality. Though several relationships attained statistical significance at particular points in time, none were stable across cohorts. The role of PROSPER’s continuous, proactive technical assistance in producing the positive results is discussed.


Journal of Early Adolescence | 2003

Exploratory Study of a Preventive Intervention with General Population African American Families

Richard Spoth; Max Guyll; Wei Chao; Virginia Molgaard

Four years of longitudinal data from 373 families participating in a randomized intervention-control clinical trial were used to examine whether intervention effects on adolescent alcohol and tobacco use trajectories were moderated by family risk, as defined by parental social emotional maladjustment. Consistent with earlier outcome evaluations based on analyses of covariance, analyses confirmed that both the Preparing for the Drug Free Years program and the Iowa Strengthening Families Program favorably influenced alcohol use index trajectories across the time frame of the study; only the latter program, however, evidenced positive effects on a tobacco use index. Concerning the primary research question, analyses provided no support for family risk moderation of any intervention effect. Findings indicate the feasibility of developing universal preventive interventions that offer comparable benefits to all families.


Journal of Counseling Psychology | 2013

Reducing the stigma associated with seeking psychotherapy through self-affirmation.

Daniel G. Lannin; Max Guyll; David L. Vogel; Stephanie Madon

The authors report the intervention implementation and outcome evaluation of the Strengthening Families Program: For Parents and Youth 10-14 (SFP 10-14),involving a sample of African American families with young adolescents. Implementation feasibility clearly was demonstrated. A sufficient number of families was recruited successfully, retention rates were strong, and observer ratings showed high adherence to the intervention protocol. Control group comparisons at posttest showed positive results for intervention-targeted child behaviors and for child participation in family meetings but not for other outcome measures. Findings of the investigation are discussed in terms of their relevance to ongoing intervention research with minority populations and considered in light of study limitations.


Personality and Individual Differences | 2003

Trait hostility: the breadth and specificity of schema effects

Max Guyll; Stephanie Madon

Psychotherapy may be underutilized because people experience self-stigma-the internalization of public stigma associated with seeking psychotherapy. The purpose of this study was to experimentally test whether the self-stigma associated with seeking psychotherapy could be reduced by a self-affirmation intervention wherein participants reflected on an important personal characteristic. Compared with a control group, we hypothesized that a self-affirmation writing task would attenuate self-stigma, and thereby evidence indirect effects on intentions and willingness to seek psychotherapy. Participants were 84 undergraduates experiencing psychological distress. After completing pretest measures of self-stigma, intentions, and willingness to seek psychotherapy, participants were randomly assigned to either a self-affirmation or a control writing task, and subsequently completed posttest measures of self-stigma, intentions, and willingness to seek psychotherapy. Consistent with hypotheses, participants who engaged in self-affirmation reported lower self-stigma at posttest. Moreover, the self-affirmation writing task resulted in a positive indirect effect on willingness to seek psychotherapy, though results failed to support an indirect effect on intentions to seek psychotherapy. Findings suggest that self-affirmation theory may provide a useful framework for designing interventions that seek to address the underutilization of psychological services through reductions in self-stigma.


Journal of Adolescent Health | 2012

Benefits of Universal Intervention Effects on a Youth Protective Shield 10 Years After Baseline

Richard Spoth; Linda Trudeau; Max Guyll; Chungyeol Shin

This study examined the limits of information processing biases associated with trait hostility. Ninety-eight participants processed information to evaluate its descriptiveness of themselves, and of actual antagonists and friends whom they knew well. For both self- and other-referent information, dependent measures included evaluations, response latencies, and memory. Results were consistent with the interpretation that trait hostility is associated with cognitive schemata that produce negative biases in the processing of information about others in general, both antagonists and friends. Specifically, hostile individuals evaluated others more harshly, made favorable judgments more slowly, and recalled less favorable information. By contrast, when evaluating hostile and friendly information for self-descriptiveness, hostile individuals did not exhibit biased processing, suggesting that the operation of hostility-related schemata may be limited to the processing of other-referent information. However, hostile individuals did generally tend to respond more slowly when making self-descriptiveness judgments of both clearly hostile and clearly friendly trait adjectives, perhaps reflecting less clarity in their self-concepts with respect to this dimension of personality.

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Kyle C. Scherr

Central Michigan University

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