Psychology Commons^™

Differential Effects And Rates Of Normal Aging In Cerebellum And Hippocampus, Michael R. Foy

Michael R. Foy

Cognitive functions show many alternative outcomes and great individual variation during normal aging. We examined learning over the adult life span in CBA mice, along with morphological and electrophysiological substrates. Our aim was to compare cerebellum-dependent delay eyeblink classical conditioning and hippocampus-dependent contextual fear conditioning in the same animals using the same conditioned and unconditioned stimuli for eyeblink and fear conditioning. In a subset of the behaviorally tested mice, we used unbiased stereology to estimate the total number of Purkinje neurons in cerebellar cortex and pyramidal neurons in the hippocampus. Several forms of synaptic plasticity were assessed at different ages …

Direct And Indirect Effects Of Injunctive Norms On Marijuana Use: The Role Of Reference Groups, Joseph W. Labrie, Justin F. Hummer, Andrew Lac, Christine M. Lee

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Objective: Little work has evaluated the relationship between injunctive norms and marijuana use. This study sought to establish whether misperceptions exist between perceived injunctive norms of typical college students and the actual approval level of the students. We also examined respondents’ perceptions of which groups (typical student, close friends, and parents) were the most and least approving of marijuana. These variables were then applied to an explanatory model to assess their relationships with marijuana use.

Method: Participants were 3,753 students (61% female) randomly recruited from two West Coast campuses. Participants were asked about their own marijuana use and their own …

Perceived Behavioral Alcohol Norms Predict Drinking For College Students While Studying Abroad, Eric R. Pedersen, Joseph W. Labrie, Justin F. Hummer

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Objective:

College students who study abroad may represent a subgroup at risk for increased drinking while living in foreign countries. The present study explores this idea as well as the extent to which students' pre-abroad perceptions of study-abroad student drinking are related to actual drinking while abroad.

Method:

Ninety-one students planning to study abroad completed an online survey of demographics, pre-abroad drinking behavior, perceptions of study-abroad student drinking behavior while abroad, and intentions to drink while abroad. Halfway into their study-abroad experience, participants completed a follow-up survey assessing drinking while abroad.

Results:

Pre-abroad intentions of drinking and pre-abroad perceptions of …

Alcohol-Related Information In Multi-Component Interventions And College Students’ Drinking Behavior, Vandana Thadani, Karen Huchting, Joseph W. Labrie

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Education-only interventions produce little change in drinking behaviors; but, multi-component prevention programs, which include alcohol information as one feature, can decrease drinking. This study examined the role of alcohol knowledge in a multi-component intervention previously found to reduce first-year female college students’ alcohol consumption. Intervention and control group students completed pre and postintervention assessments of drinking behaviors, and a postintervention assessment of alcohol-knowledge. Intervention students outperformed control students on the measure of alcohol knowledge. However knowledge did not predict drinking outcomes for this group, and it was positively correlated with drinking behaviors for control students. The findings suggest that, although …

Alcohol-Related Information In Multi-Component Interventions And College Students' Drinking Behavior, Vandana Thadani, Karen Huchting, Joseph Labrie

Psychological Science Faculty Works

Education-only interventions produce little change in drinking behaviors; but, multi-component prevention programs, which include alcohol information as one feature, can decrease drinking. This study examined the role of alcohol knowledge in a multi-component intervention previously found to reduce first-year female college students' alcohol consumption. Intervention and control group students completed pre and postintervention assessments of drinking behaviors, and a postintervention assessment of alcohol-knowledge. Intervention students outperformed control students on the measure of alcohol knowledge. However knowledge did not predict drinking outcomes for this group, and it was positively correlated with drinkingbehaviors for control students. The findings suggest that, although learning …

Preventing Risky Drinking In First-Year College Women: Further Validation Of A Female-Specific Motivational-Enhancement Group Intervention, Joseph W. Labrie, Karen K. Huchting, Andrew Lac, Summer Tawalbeh, Alysha D. Thompson, Mary E. Larimer

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Objective:

Female college students have increased their alcohol consumption rates. The current study sought to replicate the effectiveness of a female-specific motivational-enhancement group intervention and extended previous work by adding a 6-month follow-up. The intervention included several motivational-enhancement components delivered in a group setting and included a group discussion of female-specific reasons for drinking.

Method:

Participants were 285 first-year college women. Data collection consisted of an online pre-intervention questionnaire, 10 weeks of online follow-up assessment, and a 6-month online follow-up. Using a randomized design, participants chose a group session, blind to treatment status. Held during the first weeks of the …

The Prognostic Power Of Normative Influences Among Ncaa Student-Athletes, Justin F. Hummer, Joseph W. Labrie, Andrew Lac

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This study evaluated the predictive power of perceived descriptive and injunctive norms on intercollegiate student-athlete alcohol consumption and attitudes toward drinking-related behaviors. The sample consisted of 594 NCAA student-athletes from two geographically opposite sites. Norms variables utilized a school and gender-specific athletic peer reference group. Results indicate that respondents reported greater perceived injunctive norms than actual attitudes, and greater perceived descriptive norms than actual alcohol use. Further, after accounting for demographics and alcohol motivations, perceived injunctive norms were the strongest predictors of athletes' attitudes with the final model explaining 54% of the variance. Similarly, perceived descriptive norms were among the …

Family History Of Alcohol Abuse Moderates Effectiveness Of A Group Motivational Enhancement Intervention In College Women, Joseph W. Labrie, Nashla Feres, Shannon R. Kenney, Andrew Lac

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This study examined whether a self-reported family history of alcohol abuse (FH+) moderated the effects of a female-specific group motivational enhancement intervention with first-year college women. First-year college women (N= 287) completed an initial questionnaire and attended an intervention (n=161) or control (n=126) group session, of which 118 reported FH+. Repeated measures ANCOVA models were estimated to investigate whether the effectiveness of the intervention varied as a function of one’s reported family history of alcohol abuse. Results revealed that family history of alcohol abuse moderated intervention efficacy. Although the intervention was effective in producing …

Effects Of Onset Density In Preschool Children: Implications For Development Of Phonological Awareness And Phonological Representation, Judith G. Foy, Virginia A. Mann

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Neighborhood density influences adult performance on several worked processing tasks. Some studies show age-related effects of density on children's performance, reflecting a developmental restructuring of the mental lexicon from holistic into segmental representations that may play a role in phonological awareness. To further investigate density effects and their implications for development of phonological awareness, we compared performance on dense and sparse onset words. We adapted these materials to three phonological awareness tests that were pretested on adults then administered to preschool children who were expected to vary in phonological awareness skills. For both the adults and the children who passed …

What Men Want: The Role Of Reflective Opposite-Sex Normative Preferences In Alcohol Use Among College Women, Joseph W. Labrie, Jessica Cail, Justin F. Hummer, Andrew Lac, Clayton Neighbors

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Misperceptions of peer drinking norms have been found to be strongly associated with individual drinking behavior, especially for proximal reference groups such as same-sex friends. Less studied are the effects of perceived preferences from the opposite sex on alcohol use; that is, the behaviors an individual believe the opposite sex prefers from them. Research suggests that these perceived “reflective” normative preferences may be particularly salient among college women, who may drink in pursuit of intimate relationships and positive attention from male peers. Heterosexual undergraduate students from two universities participated in this project. Females answered questions regarding the amount of alcohol …

Differential Drinking Patterns Of Family History Positive And Family History Negative First Semester College Females, Joseph W. Labrie, Shannon R. Kenney, Andrew Lac, Savannah F. Migliuri

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Objective

This study compares the natural drinking patterns of family history positive and family history negative women during their first semester of college, a transitional period known to coincide with considerable alcohol-related risks.

Method

Seventy-two incoming undergraduate females, approximately half of whom reported a family history of alcohol misuse, completed initial questionnaires as well as Timeline Followback assessments. In addition, participants completed five successive weeks of online behavioral diaries measuring three categories of prospective alcohol consumption: total drinks, maximum drinks, and heavy episodic drinking events. Repeated measures ANCOVA models, controlling for prior alcohol consumption, examined participants’ drinking behavior.

Results

Over …

Before You Slip Into The Night, You’Ll Want Something To Drink: Exploring The Reasons For Prepartying Behavior Among College Student Drinkers, Eric R. Pedersen, Joseph W. Labrie, Jason R. Kilmer

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Prepartying among college students is an emerging topic of research and clinical focus. Unfortunately for some students, prepartying, or quick drinking before going out for the primary event of the evening, can lead to high blood alcohol levels, further drinking, and subsequent consequences. The present study was designed to explore the reasons for prepartying among a sample of 444 male and female students. Males and females reported arriving to a social event already under the influence, saving money, and making the night more interesting as their most highly endorsed reasons for prepartying. Males endorsed reasons relating to increased social and …

A Brief Live Interactive Normative Group Intervention Using Wireless Keypads To Reduce Drinking And Alcohol Consequences In College Student Athletes, Joseph W. Labrie, Justin F. Hummer, Karen K. Huchting, Clayton Neighbors

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Introduction and Aims

Misperceptions of how members of one’s social group think and act influence behaviour. The current study was designed to extend the research of group-specific normative feedback interventions among salient campus groups with heightened risk. Although not a randomised controlled trial, this research used normative feedback that was obtained using wireless keypad technology during a live session, within sex-specific student athlete groups to extend the proof of concept of using this brief interactive intervention.

Design and Methods

Participants included 660 intercollegiate athletes from all varsity athletic teams at two private, mid-size universities. Intervention data were gathered in vivo …

Normative Misperceptions And Marijuana Use Among Male And Female College Athletes, Joseph W. Labrie, Joel R. Grossbard, Justin F. Hummer

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This research assessed the frequency of marijuana use and perceptions of gender-specific marijuana use among intercollegiate athletes from two National Collegiate Athletic Association (NCAA) Division 1 universities. Normative data were gathered in a live setting. Male athletes reported significantly greater marijuana use than female athletes and the overall sample reported higher prevalence of use than national averages for college athletes and non-athletes. Gender-specific perceptions among male and female athletes exceeded actual self-reported use, and perceived marijuana use among male athletes was strongly associated with personal use. The findings demonstrate the salience of group-specific marijuana norms and present implications for normative …

Mental And Social Health Impacts The Use Of Protective Behavioral Strategies In Reducing Risky Drinking And Alcohol Consequences, Joseph W. Labrie, Shannon R. Kenney, Andrew Lac, Jonathan A. Garcia, Paul Ferraiolo

Psychological Science Faculty Works

The present study is the first to examine the moderating effects of mental and social health status in the relationship between protective behavioral strategies utilized to reduce high risk drinking (e.g., alternating alcoholic and nonalcoholic drinks or avoiding drinking games) and alcohol outcomes (drinking variables and alcohol-related negative consequences) among first-year college females (N = 128). Findings revealed that protective behaviors were particularly effective in reducing both alcohol consumption and related risks among participants reporting lower mental health as compared to higher mental health. Further, participants with higher social health who utilized protective behaviors consumed significantly fewer maximum drinks per …

A Night To Remember: A Harm-Reduction Birthday Card Intervention Reduces High-Risk Drinking During 21st Birthday Celebrations, Joseph W. Labrie, Savannah Migliuri, Jessica Cail

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Objective

In collaboration with Residence Life, the Heads UP research team developed a 21st birthday card program to help reduce the risky drinking often associated with these celebrations.

Participants

81 students (28 males, 53 females) completed a post-21st birthday survey. Of these, 74 reported drinking during their 21st birthday and were included in the analyses.

Methods

During the 2005–2006 school year, the authors assigned students celebrating 21st birthdays to either receive an alcohol risk-reduction birthday card or to a no-card condition. The students completed a survey after their birthday.

Results

Students who received the card consumed fewer drinks and reached …

Estrogen And Hippocampal Plasticity In Rodent Models, Michael R. Foy, Michel Baudry, Roberta Diaz Brinton, Richard F. Thompson

Psychological Science Faculty Works

Accumulating evidence indicates that ovarian hormones regulate a wide variety of non-reproductive functions in the central nervous system by interacting with several molecular and cellular processes. A growing animal literature using both adult and aged rodent models indicates that 17β-estradiol, the most potent of the biologically relevant estrogens, facilitates some forms of learning and memory, in particular those that involve hippocampal-dependent tasks. A recently developed triple-transgenic mouse (3xTg-AD) has been widely used as an animal model of Alzheimer's disease, as this mouse exhibits an age-related and progressive neuropathological phenotype that includes both plaque and tangle pathology mainly restricted to hippocampus, …

Self-Consciousness Moderates The Relationship Between Perceived Norms And Drinking In College Students, Joseph W. Labrie, Justin F. Hummer, Clayton Neighbors

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The current research examines whether self-consciousness subscales have prognostic value in the relationship between perceived norms and drinking and if that differs among college men and women. Results indicate that self-consciousness moderates gender differences in the relationship between perceived social norms and drinking. A strong positive relationship was found between perceived norms (descriptive and injunctive) and drinking for men relative to women and this was more pronounced among individuals who were lower in public self-consciousness. Similarly, the relationship between perceived injunctive norms and drinking was significantly stronger among men than women and this was more pronounced among individuals who were …

Changes In Drinking Patterns Across The Transition To College Among First-Year College Males, Joseph W. Labrie, Toby Lamb, Eric Pedersen

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Few studies examine changes in drinking behavior during the transition from high school to college. Using a sample of 239 first-year males, we hypothesized that participants would increase drinking from pre-college to the first month of college. Results reveal a general trend toward increased drinking upon entering college. Caucasians increased drinking more than non-Caucasians. Social expectancies of alcohol moderated increases in drinking behavior. These findings indicate that differential changes in drinking behavior occur among incoming college males. Interventions with college students need to address both preventing heavy consumption and alcohol-related problems in pre-college light drinkers and in reducing these behaviors …

Sensation Seeking And Visual Selective Attention In Adults With Hiv/Aids, David J. Hardy, Steven A. Castellon, Charles H. Hinkin, Andrew J. Levine, Mona N. Lam

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The association between sensation seeking and visual selective attention was examined in 31 adults with the Human Immunodeficiency Virus (HIV). Sensation seeking was measured with Zuckerman’s Sensation Seeking Scale Form V (SSS-V). Selective attention was assessed with a perceptual span task, where a target letter-character must be identified in a quickly presented array of nontarget letter-characters. As predicted, sensation seeking was strongly associated (R² = .229) with perceptual span performance in the array size 12 condition, where selective attention demands were greatest, but not in the easier conditions. The Disinhibition, Boredom Susceptibility, and Experience Seeking subscales of the …

A Brief Rutgers Alcohol Problem Index With Less Potential For Bias, Mitch Earleywine, Joseph W. Labrie, Eric R. Pedersen

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The Rutgers Alcohol Problem Index (RAPI), a popular measure of alcohol-related problems in adolescents, varies with many theoretically-relevant measures of individual differences, including sex. The sex differences in RAPI scores fit many models of alcohol problems but could also arise from biased items. In addition, a short form could increase the scale’s utility. The current study examined RAPI scores, an additional inventory of problem drinking, and measures of alcohol consumption in over 2,000 college student drinkers. Analyses revealed items that functioned differentially for men and women. Dropping these items created a shorter scale with almost identical psychometric properties but less …

Prepartying Promotes Heightened Risk In The College Environment: An Event-Level Report, Joseph W. Labrie, Eric R. Pedersen

Psychological Science Faculty Works

Due to the emergence of research literature examining the prepartying behavior of college students, the present study examines students’ varying drinking rates, blood alcohol levels (BALs), and alcohol-related consequences during two drinking events – one involving prepartying and one devoid of prepartying. Two-hundred and thirty-eight student drinkers completed an online drinking assessment detailing their two most recent drinking occasions involving and not involving prepartying. Participants responded to a series of questions regarding quantities consumed on the drinking day and occurrence of alcohol-related consequences. While men did not differ in drinking or estimated BALs, between the two drinking days, female participants …

The Role Of Self-Consciousness In The Experience Of Alcohol-Related Consequences Among College Students, Joseph W. Labrie, Eric R. Pedersen, Clayton Neighbors, Justin F. Hummer

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Heavy drinking among college students is a well-established national concern. An in-depth look at the characteristics and traits of heavy drinking students is an essential precursor to the development of successful targeted interventions with at-risk students. The current study examines the role self-consciousness (private, public, social anxiety) plays in the experience of alcohol-related consequences among a sample of 1,168 student members of campus organizations. Male gender predicted drinking in the sample, while both private self-consciousness and social anxiety predicted less drinking. Public self-consciousness predicted alcohol-related consequences over and above the variance explained by drinking for both males and females. Additionally, …

Normative Misperceptions Of Drinking Among College Students: A Look At The Specific Contexts Of Prepartying And Drinking Games, Eric R. Pedersen, Joseph W. Labrie

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Objective

In the collegiate context, misperceptions of student drinking norms are among the most salient predictors of heavy drinking, Despite overall overestimations of peer alcohol use, misperceptions of context-specific behaviors have been infrequently studied. The present study examines students' perceptions of the high-risk behaviors of prepartying and drinking games and investigates the relationship between perceived and actual behaviors.

Method

A sample of 524 college students completed an online assessment of actual and perceived alcohol use related to prepartying and drinking games. Quantity and frequency of overall drinking, prepartying, and drinking games were assessed for perceptions of all students at the …

An Application Of The Theory Of Planned Behavior To Sorority Alcohol Consumption, Karen Huchting, Andrew Lac, Joseph W. Labrie

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Greek-affiliated college students have been found to drink more heavily and frequently than other students. With female student drinking on the rise over the past decade, sorority women may be at particular risk for heavy consumption patterns. The current study is the first to apply the Theory of Planned Behavior (TPB) to examine drinking patterns among a sorority-only sample. Two-hundred and forty-seven sorority members completed questionnaires measuring TPB variables of attitudes, norms, perceived behavioral control, and intentions, with drinking behaviors measured one month later. Latent structural equation modeling examined the pathways of the TPB model. Intentions to drink mediated the …

Assessment Of Perceived And Actual Alcohol Norms In Varying Contexts: Exploring Social Impact Theory Among College Students, Eric R. Pedersen, Joseph W. Labrie, Andrew Lac

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The social norms approach to college drinking suggests that students misperceive the drinking behavior and attitudes of their peers. While much is known about these misperceptions, research is sparse regarding the context in which perceived and actual norms are assessed. As social influence is pronounced in college, the principles of Social Impact Theory may contribute to differences between assessments performed individually and those completed when surrounded by members of one’s salient reference group. The current study examines 284 members of campus organizations in two contexts (online and group) to determine if individuals endorse different responses to questions of perceived and …

A Brief Decisional Balance Intervention Increases Motivation And Behavior Regarding Condom Use In High-Risk Heterosexual College Men, Joseph W. Labrie, Eric R. Pedersen, Alysha D. Thompson, Mitch Earleywine

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Male college students constitute one of a number of at-risk populations susceptible to receiving and transferring sexually transmitted infections. Interventions designed to increase condom use have produced mixed results, but increasing motivation to use condoms may decrease risky sexual behavior. The current study examined the decisional balance, a component of Motivational Interviewing (MI), as an intervention to promote condom use. A total of 41 college men at-risk for negative outcomes from both unsafe sex and drinking participated. They reported both infrequent condom use and heavy drinking. Immediately following a decisional balance on condom use, three separate measures of motivation to …

A Randomized Motivational Enhancement Prevention Group Reduces Drinking And Alcohol Consequences In First-Year College Women, Joseph W. Labrie, Karen Huchting, Summer Tawalbeh, Eric R. Pedersen, Alysha D. Thompson

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Alcohol consumption among college students has become an increasing problem that requires attention from college administrators, staff, and researchers. Despite the physiological differences between men and women, college women are drinking at increasingly risky rates, placing them at increased risk for negative consequences. The current study tested a group motivational enhancement approach to the prevention of heavy drinking among 1st-year college women. Using a randomized design, the authors assigned participants either to a group that received a single-session motivational enhancement intervention to reduce risky drinking that focused partly on women’s specific reasons for drinking (n =126) or to an assessment-only …

The Differential Impact Of Relational Health On Alcohol Consumption And Consequences In First Year College Women, Joseph W. Labrie, Alysha D. Thompson, Paul Ferraiolo, Jonathan A. Garcia, Karie Huchting, Kristin Shelesky

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The Relational Health Indices (RHI) is a relatively new measure that assesses the strength of relationships. It has been found that relational health has a protective factor for women, such that it enhances positive experiences and limits negative ones. The current study is the first to use the RHI to examine the effect of relational health on alcohol consumption and alcohol consequences. First year college women were given questionnaires assessing relational health, drinking motives, and alcohol use in their first few months at a mid-sized, private university. Due to the social nature of college settings, it was predicted that relational …

Progesterone Receptors: Form And Function In Brain, Roberta Diaz Brinton, Richard F. Thompson, Michael R. Foy, Michel Baudry, Jun Ming Wang, Caleb E. Finch, Todd E. Morgan, Christian J. Pike, Wendy J. Mack, Frank Z. Stanczyk, Jon Nilsen

Psychological Science Faculty Works

Emerging data indicate that progesterone has multiple non-reproductive functions in the central nervous system to regulate cognition, mood, inflammation, mitochondrial function, neurogenesis and regeneration, myelination and recovery from traumatic brain injury. Progesterone-regulated neural responses are mediated by an array of progesterone receptors (PR) that include the classic nuclear PRA and PRB receptors and splice variants of each, the seven transmembrane domain 7TMPRβ and the membrane-associated 25-Dx PR (PGRMC1). These PRs induce classic regulation of gene expression while also transducing signaling cascades that originate at the cell membrane and ultimately activate transcription factors. Remarkably, PRs are broadly expressed throughout the brain …