Psychology Commons^™

Adaptation In The Sensory Cortex Drives Bistable Switching During Auditory Stream Segregation, Nathan C. Higgins, Alexandra N. Scurry, Fang Jiang, David F. Little, Mounya Elhilali, Joel S. Snyder

Psychology Faculty Research

Current theories of perception emphasize the role of neural adaptation, inhibitory competition, and noise as key components that lead to switches in perception. Supporting evidence comes from neurophysiological findings of specific neural signatures in modality-specific and supramodal brain areas that appear to be critical to switches in perception. We used functional magnetic resonance imaging to study brain activity around the time of switches in perception while participants listened to a bistable auditory stream segregation stimulus, which can be heard as one integrated stream of tones or two segregated streams of tones. The auditory thalamus showed more activity around the time …

The Resilience Of Middle-Aged And Older Men Who Have Sex With Men To Hiv/Aids: Southern Nevada Stakeholder Perspectives In The 21st Century, Renato M. Liboro, Sherry Bell, Brandon Ranuschio, Jenna Despres, Trinity Puno, Aruna Sedere, Nadia Sheik Yosef, Esmeralda Villalobos, Janelle Wackens, Lianne Barnes

Psychology Faculty Research

This community report presents the findings and analysis of a survey that was part of the quantitative stage of a mixed-method Community-Based Participatory Research (CBPR) project dedicated to examine the perspectives and lived experiences of racially and ethnically diverse, middle-aged and older men who have sex with men in Southern Nevada on factors that build and promote their resilience to HIV/AIDS. The CBPR project was conducted in collaboration with community partners such as the LGBTQIA+ Community Center of Southern Nevada, Southern Nevada Health District’s Ryan White Program, Community Counseling Center of Southern Nevada, and numerous other agencies from Clark County …

Common Features In Compulsive Sexual Behavior, Substance Use Disorders, Personality, Temperament And Attachment—A Narrative Review, Yaniv Efrati, Shane W. Kraus, Gal Kaplan

Psychology Faculty Research

Do addictions share common traits of an “addictive personality” or do different addictions have distinct personality profiles? This narrative review examines the differences in the associations between substance use disorder (SUD) and compulsive sexual behavior disorder (CSBD), on the one hand, and personality traits, attachment dispositions, and temperament, on the other hand. We found that both people with a SUD and people with CSBD tended to be more spontaneous, careless, and less reliable, to place self-interest above getting along with others, to show emotional instability and experience negative emotions such as anger, anxiety, and/or depression, to be less able to …

Resetting Of Auditory And Visual Segregation Occurs After Transient Stimuli Of The Same Modality, Nathan C. Higgins, Ambar G. Monjaras, Breanne D. Yerkes, David F. Little, Jessica E. Nave-Blodgett, Mounya Elhilali, Joel S. Snyder

Psychology Faculty Research

In the presence of a continually changing sensory environment, maintaining stable but flexible awareness is paramount, and requires continual organization of information. Determining which stimulus features belong together, and which are separate is therefore one of the primary tasks of the sensory systems. Unknown is whether there is a global or sensory-specific mechanism that regulates the final perceptual outcome of this streaming process. To test the extent of modality independence in perceptual control, an auditory streaming experiment, and a visual moving-plaid experiment were performed. Both were designed to evoke alternating perception of an integrated or segregated percept. In both experiments, …

Individual Differences In Infants' Temperament Affect Face Processing, Jennifer L. Rennels, Andrea J. Kayl, Kirsty M. Kulhanek

Psychology Faculty Research

Infants show an advantage in processing female and familiar race faces, but the effect sizes are often small, suggesting individual differences in their discrimination abilities. This research assessed whether differences in 6–10-month-olds’ temperament (surgency and orienting) predicted how they scanned individual faces varying in race and gender during familiarization and whether and how long it took them to locate the face during a visual search task. This study also examined whether infants viewing faces posing pleasant relative to neutral expressions would facilitate their discrimination of male and unfamiliar race faces. Results showed that infants’ surgency on its own or in …

Utilizing The Community-Based Research Approach To Examine Mental Health And Support Services Issues Related To Hiv-Associated Neurocognitive Disorder, Renato M. Liboro

Psychology Faculty Research

Human immunodeficiency virus (HIV)-associated neurocognitive disorder is an emergent public health problem known to HIV researchers and scientists, but unfortunately, is a concern that still needs to be better recognized by people living with HIV and HIV service providers. Research studies have reported that between 30 to 50% of people living with HIV who have access to combination antiretroviral therapy are and will be affected by this disorder. This raises the need to find more appropriate research approaches for examining issues that will significantly impact people living with HIV experiencing or at risk of developing neurocognitive impairments. People living with …

Strategies Employed By Community-Based Service Providers To Address Hiv-Associated Neurocognitive Challenges: A Qualitative Study, Renato M. Liboro, Sean B. Rourke, Francisco Ibanez-Carrasco, Andrew Easton, Daniel Pugh, Claudia Medina, Allan Rae, Paul A. Shuper, Lori E. Ross

Psychology Faculty Research

Background: HIV-associated neurocognitive disorders and other causes of neurocognitive challenges experienced by people living with HIV (PLWH) persist as public health concerns in developed countries. Consequently, PLWH who experience neurocognitive challenges increasingly require social support and mental health services from community-based providers in the HIV sector. Methods: Thirty-three providers from 22 AIDS service organizations across Ontario, Canada, were interviewed to determine the strategies they used to support PLWH experiencing neurocognitive difficulties. Thematic analysis was conducted to determine key themes from the interview data. Results: Three types of strategies were identified: (a) intrapersonal, (b) interpersonal, and (c) organizational. Intrapersonal strategies involved …

Barriers To Addressing Hiv-Associated Neurocognitive Disorder (Hand): Community-Based Service Provider Perspectives, Renato M. Liboro, Francisco Ibanez-Carrasco, Sean B. Rourke, Andrew Easton, Claudia Medina, Daniel Pugh, Allan Rae, Lori E. Ross, Paul A. Shuper

Psychology Faculty Research

HIV-Associated Neurocognitive Disorder (HAND) is an emergent public health issue in developed countries. Consequently, people living with HIV who experience HAND will increasingly require support from community-based HIV service providers. The objective of our qualitative study was to identify barriers service providers face in addressing HAND among people living with HIV. Thirty-three providers from 22 AIDS service organizations across Ontario, Canada, were interviewed. Using thematic analysis, three types of barriers were identified: (a) personal/professional, (b) service access, and (c) systemic. This paper draws attention to HAND-related obstacles that service providers encounter in their work and presents options to overcome them.

Understanding The Irony: Canadian Gay Men Living With Hiv/Aids, Their Catholic Devotion, And Greater Well-Being, Renato M. Liboro, Richard T.G. Walsh

Psychology Faculty Research

Nine Canadian Catholic HIV-positive gay men were interviewed to obtain a better understanding of why and how they were able to persevere in their faith despite their religion’s teachings against homosexuality and contributions to the stigmatization of HIV/AIDS. By examining the lived experiences and personal perspectives of the participants, the study aimed to explore and elucidate the significant role of Catholicism and the Catholic Church both as a continued source of marginalization and oppression, as well as strength and support, for Canadian gay men living with HIV/AIDS today.

Medicalization Of Mental Disorders: 1970- To The Present, W. Joseph Wyatt

Psychology Faculty Research

A thirty-five year escalation of emphasis on biological causation has rendered, for many, medications as the treatment of choice for mental disorders. Non-drug treatment may be cast aside, as a result.

What Makes Women Tired? A Community Sample, Donna E. Stewart, Susan Abbey, Marta Meana, Katherine M. Boydell

Psychology Faculty Research

We aimed to determine the major health concerns or problems of women and their personal attributions for the causes of their primary health concerns. We used a survey of women from the Toronto area attending a women's health symposium. Completed questionnaires were returned by 153 (85%) of 180 women attendees. Persistent fatigue was the primary and most commonly cited health concern. Fatigue was ranked first by 42 (27.5%) women and among the top 10 concerns by 123 (80.4%) women. Women attributed their fatigue to a combination of home and outside work (63.4%), poor sleep (38.2%), lack of time for self …

Psychiatry’S Thirty-Five-Year, Non-Empirical Reach For Biological Explanations, W. Joseph Wyatt, Donna M. Midkiff

Psychology Faculty Research

This is our third article in a series that began with a special issue of Behavior and Social Issues in 2006. Here we briefly review our central points from the first two articles. First is that over the past thirty-five years, claims of biological causation of mental and behavioral disorders have gone well beyond the research data, for reasons that are largely related to psychiatry’s lost esteem and protection of its “turf,” as well as to the financial interests of the pharmaceutical industry. Our second position is that claims of psychotropic drugs’ effectiveness have been overstated. We respond, as well, …

Six-To-One Gets The Job Done: Comments On The Reviews, W. Joseph Wyatt, Donna M. Midkiff

Psychology Faculty Research

We are pleased to note that six of the seven responses to our article were marked by approval, and/or thoughtful contemplation, regarding our central theses—that the research said to support biological causation of mental disorders is relatively weak, and that the claims of drug effectiveness are often overstated.

Biological Psychiatry: A Practice In Search Of A Science, W. Joseph Wyatt, Donna M. Midkiff

Psychology Faculty Research

The rise of the biological causation model in the past thirty years is traced to psychiatry’s efforts to regain lost status and to protect itself from intrusions by non-medical practitioners, as well as to the pharmaceutical industry’s drive for profits. Evidence in support of the model, including studies of identical twins and of brain structure and function, are less revealing than was earlier thought, due to problems in methodology and interpretation. Organized psychiatry, when challenged in 2003, was unable to provide compelling evidence for biological causation of most mental and behavioral disorders. A paradigm shift away from biological causation and …

Chronic Pain: The Extra Burden On Canadian Women, Marta Meana, Robert Cho, Marie Desmeules

Psychology Faculty Research

Health Issue

Chronic pain is a major health problem associated with significant costs to both afflicted individuals and society as a whole. These costs seem to be disproportionately borne by women, who generally have higher prevalence rates for chronic pain than do men.

Key findings

Data obtained from 125,574 respondents to the Canadian Community Health Survey (2000–2001) indicated that 18% of Canadian women suffered from chronic pain, compared to 14% of men. This gender discrepancy, however, seemed to be linked primarily to differences in age, income, and education between adult men and women in this large sample. Age, income, depression …

Chronic Pain: The Extra Burden On Canadian Women, Marta Meana, Robert Cho, Marie Desmeules

Psychology Faculty Research

Health Issue: Chronic pain is a major health problem associated with significant costs to both afflicted individuals and society as a whole. These costs seem to be disproportionately borne by women, who generally have higher prevalence rates for chronic pain than do men.

Key findings: Data obtained from 125,574 respondents to the Canadian Community Health Survey (2000–2001) indicated that 18% of Canadian women suffered from chronic pain, compared to 14% of men. This gender discrepancy, however, seemed to be linked primarily to differences in age, income, and education between adult men and women in this large sample. Age, income, depression …

Physician-Related Determinants Of Cervical Cancer Screening Among Caribbean Women In Toronto, Ilene Hyman, Punam Mony Singh, Marta Meana, Usha George, Lilian M. Wells, Donna E. Stewart

Psychology Faculty Research

BACKGROUND: Minority women in Canada are less likely to be screened for cervical cancer than their counterparts in the general population, despite the fact that the proportion of these women who consult a general practitioner about their health each year is similar to minority women. This study examined the physician and practice characteristics associated with Pap testing and perceived barriers to Pap testing of family physicians serving the Caribbean community of Toronto.

METHODS: A mail-back questionnaire was sent to Toronto family physicians practicing in neighborhoods with a high proportion of Caribbean Canadians.

RESULTS: Although 79.7% of the 64 participating physicians …

Patient Preference For The Management Of Mildly Abnormal Papanicolau Smears, Marta Meana, Donna E. Stewart, Gordon M. Lickrish, Joan Murphy, Barry Rosen

Psychology Faculty Research

The article provides information on a study that investigated management preference and desire for decision-making involvement in women who have received a first mildly abnormal Papanicolaou smear. The majority of women in this highly educated sample preferred active management of their mildly abnormal Pap smears, although a substantial minority either opted for the surveillance strategy or reported no strong preference. Furthermore, management preference in this sample was not related to knowledge but rather to level of state anxiety. This indicates that these decisions may be guided more by emotions than by facts. Research has shown repeatedly that abnormal Pap smears …

The Meeting Of Pain And Depression: Comorbidity In Women, Marta Meana

Psychology Faculty Research

The higher prevalence of depression in women is coupled with a higher prevalence of pain complaints. Growing evidence suggests that the comorbidity of these conditions is also proportionately higher in women than men. This paper critically reviews the empirical findings relating to gender differences in comorbid pain and depression as well as findings in support of hypothesized etiologic factors that could explain why women may be more susceptible than men to comorbidity. The empirical evidence for biogenic, psychogenic, and sociogenic explanatory models is presented, and an integration of these models is proposed as a guideline to both research and clinical …

Cardiac Rehabilitation: Gender Differences In Factors Influencing Participation, Lani Lieberman, Marta Meana, Donna E. Stewart

Psychology Faculty Research

This study investigates gender differences in the barriers and incentives that are most influential in the coronary patient's decision to participate in cardiac rehabilitation (CRPs) and suggests strategies to counter these barriers. Patient surveys were administered to consecutive English-speaking attenders and referred nonattenders to a cardiac rehabilitation center at a university healthcare system in Toronto, Canada. A survey questionnaire, constructed from a literature review and advice from key informants, examined potential factors affecting decisions to engage in CRPs. One129 attenders at a CRP and 61 referred nonattenders completed the questionnaire. Physician recommendation was reported to be the most important factor …

Affect And Marital Adjustment In Women’S Rating Of Dyspareunic Pain, Marta Meana, Irv Binik, Sainir Khalife, Deborah Cohen

Psychology Faculty Research

OBJECTIVE: To investigate the extent to which depressive symptomatology, anxiety, and marital adjustment mediate pain ratings in women suffering from dyspareunia.

METHOD: Seventy-six women with dyspareunia were administered the depression and anxiety scales of Derogatis's Brief Symptom Inventory and the McGill Pain Questionnaire. They also underwent a manual-visual gynecological examination, an ultrasound, and a colposcopy in an attempt to identify potential evidence and type of organicity.

RESULTS: Depressive symptomatology, anxiety, and marital adjustment together accounted for a significant amount of the variance in pain ratings, although only anxiety and marital adjustment were independent predictors of pain ratings in the entire …