Browsing by Author "Mosher, Catherine Esther"

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    The effects of alcohol odor cues on food and alcohol attentional bias, cravings, and consumption
    (2015-07-08) Karyadi, Kenny; Cyders, Melissa A.; Stewart, Jesse; Mosher, Catherine Esther; Grahame, Nicholas J.
    In order to elucidate the role of classical conditioning in food and alcohol co-consumption, the present study examined: (1) the effects of alcohol odor cues on alcohol and food cravings and attentional bias (bias in selective attention toward either food or alcohol pictures relative to neutral pictures); and (2) the role of alcohol odor cue elicited cravings and attentional biases on subsequent consumption. Participants (n = 77; mean age = 30.84, SD = 9.46; 51.9% female, 83.1% Caucasian) first completed the lab portion of the study. In this portion, they were exposed to alcohol and neutral odorants, after which their food and alcohol cravings and attentional bias were assessed. Participants then received an online survey the next day, on which they reported their level of food and alcohol consumption following the lab portion of the study. Using repeated measures analysis of covariance, alcohol odor cues were differentially effective in increasing food and alcohol attentional bias and cravings (Fs= 0.06 to 2.72, ps= 0.03 to 0.81). Using logistic and multiple regressions, alcohol odor cue elicited alcohol attentional bias, food attentional bias, and food cravings were associated with later alcohol consumption, but not with later food consumption or concurrent consumption (βs = -0.28 to 0.48, ps = 0.02 to 0.99; Exp(B)s = 0.95 to 1.83, ps = 0.33 to 0.91). Overall, alcohol odor cues can become conditioned stimuli that elicit conditioned food-related and alcohol-related responses, both of which persist long enough to motivate later alcohol consumption; however, these conditioned responses might not persist long enough to motivate later food or concurrent consumption. These findings serve as a first step in clarifying the role of classical conditioning in concurrent consumption. In particular, they suggest that additional empirical investigations are needed to: (1) clarify the classical conditioning mechanisms underlying concurrent consumption; and (2) examine whether interventions targeting classical conditioning mechanisms are effective for reducing alcohol use.
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    Food attentional biases and adiposity: are energy intake and external eating mediators of this relationship?
    (2015-08) Vrany, Elizabeth; Stewart, Jesse C.; Cyders, Melissa Anne; Mosher, Catherine Esther
    Obesity is a substantial threat to the health of over a third of adults in the United States. Some evidence suggests that food attentional bias, or the tendency to automatically direct attention toward food-related stimuli in the environment, may contribute to the development of obesity in susceptible individuals. This study hypothesized that (1) food attentional bias would be positively associated with adiposity, (2) food attentional bias would be positively associated with energy intake and external eating, and (3) energy intake and external eating would partially mediate the association between food attentional bias and adiposity. Data were collected from a sample of 120 undergraduate students. Three measures of food attentional bias were obtained: reaction time bias obtained from a visual dot-probe task and direction bias and duration bias obtained from eye tracking. Adiposity indices of body mass index (kg/m2) and body fat percent were measured using standard medical devices. Data were obtained for two mediators: 1) energy intake was assessed by web-based automated 24-hour dietary recall and 2) external eating was assessed using the External Eating Subscale of the Dutch Eating Behavior Questionnaire. Separate linear regression models examining the association between each measure of food attentional bias with each measure of adiposity (adjusted for age, sex, race/ethnicity, and subjective hunger) indicated no associations. Similarly, linear regression analyses revealed no associations between measures of food attentional bias and energy intake or external eating. Models testing for statistical mediation demonstrated that energy intake and external eating were not significant mediators. However, mediation analyses demonstrated a significant overall effect and direct effect between direction bias and BMI in a reduced sample used to test for energy intake as a mediator, suggesting the presence of an association which may not have been detected in the larger sample due to methodological issues, measurement error, or type I error. Despite the overall null results, these findings, in conjunction with previous studies on food attentional biases and adiposity, highlight the need for future investigations examining prospective associations between food attentional bias and adiposity.
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    Intensive Treatment Near the End of Life in Advanced Cancer Patients
    (2016-04-07) Touza, Kaitlin Kyna; Rand, Kevin L.; Stewart, Jesse; Mosher, Catherine Esther; Grahame, Nicholas J.
    Many advanced cancer patients receive intensive treatment near the end of life (EOL). Intensive treatment near the EOL is often associated with worse outcomes, such as worse quality of life (QOL), greater distress in patients and caregivers, and higher health care costs. For cancers typically unresponsive to chemotherapy such as lung and gastro-intestinal (GI), the side effects of intensive treatment are endured without increasing survival time. To date, research on EOL care in advanced cancer patients has focused on patient prognostic understanding, physician communication, and patient distress. These factors do not fully explain why many patients receive intensive treatment near the EOL when there is no hope for cure. Hence, there is a need to better understand the factors that influence EOL treatment in order to improve patient and caregiver outcomes. Self-Regulation Theory (SRT) provides a framework that may help explain motivations and care decisions in this population. This study had two aims: 1) to examine the associations between EOL clinical encounters (i.e., EOL conversations with a physician) and treatment intensity in advanced cancer patients near the EOL; and 2) to examine the associations between important SRT constructs (i.e., goal flexibility, hope, and optimism) and treatment intensity in advanced cancer patients near the EOL. A sample of 76 advanced lung and GI cancer patients was recruited from Indiana University Simon Cancer Center. Hope predicted receiving chemotherapy closer to death (β = -.41, t (66) = -2.31, p = .025), indicating more intensive treatment near EOL. Other predictor variables were not significantly associated with intensive treatment. Implications and methodological limitations are discussed.
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    Measures of Cancer-related Loneliness and Negative Social Expectations: Development and Preliminary Validation
    (2016-01-21) Adams, Rebecca N.; Kroenke, Kurt; Mosher, Catherine Esther; Hirsh, Adam Todd; Rand, Kevin L.; Grahame, Nicholas J.
    Loneliness is a known risk factor for poor mental and physical health outcomes in the general population, and preliminary research suggests that loneliness is linked to poorer health in cancer patients as well. Various aspects of the cancer experience (e.g., heightened existential concerns) lend themselves to making patients feel alone and misunderstood. Furthermore, loneliness theory suggests that negative social expectations, which may specifically relate to the cancer experience, precipitate and sustain loneliness. Thus, loneliness interventions in cancer should be tailored to address illness-related social conditions and negative social expectations. Prior to the development of loneliness interventions for cancer populations, cancer-specific tools are needed to assess: (1) loneliness attributed to cancer (i.e., cancer-related loneliness), and (2) negative social expectations related to cancer. In the current project I developed measures of cancer-related loneliness and cancer-related negative social expectations for use in future theory-based loneliness research. A mixed-methods study design was employed. First, I developed items for the measure of cancer-related loneliness (i.e., the Cancer Loneliness Scale) based on theory, prior research, and expert feedback. Second, I conducted a clinic-based qualitative study (n=15) to: (1) obtain cancer patient feedback on the Cancer Loneliness Scale items, and (2) inform development of the item pool for the measure of negative social expectations (i.e., the Cancer-related Negative Social Expectations Scale). Interviews were audiotaped, transcribed verbatim, and then transferred to Atlas.ti for analysis. Content analysis was used to analyze data regarding patient feedback and theoretical thematic analysis was used to analyze data regarding negative social expectations. Overall, patients said they liked the Cancer Loneliness Scale and no changes were made to the items based on patient feedback. Based on results, I also created five content domains of negative social expectations that were represented in the item pool for the Cancer-related Negative Social Expectations Scale. Third, I conducted a telephone and mail-based quantitative study (n=186) to assess psychometric properties of the two new measures. Dimensionality was determined using confirmatory factor analysis. Reliability was assessed by examining internal consistency coefficients and construct validity was assessed by examining theoretical relationships between the Cancer Loneliness Scale, the Cancer-related Negative Social Expectations Scale, and existing reliable and valid measures of health and social well-being. The final products of the project included a 7-item unidimensional Cancer Loneliness Scale and 5-item unidimensional Cancer-related Negative Social Expectations Scale. Excellent evidence for reliability and validity was found for both measures. The resulting measures have both clinical and research utility.
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    Symptom Severity and Importance in Metastatic Breast Cancer Patients: An Examination of Cognitive Complaints and Related Symptoms
    (2016-07) Tometich, Danielle B.; Rand, Kevin L.; Mosher, Catherine Esther; Hirsh, Adam Todd; Grahame, Nicholas J.
    Cognitive changes associated with cancer and its treatment have been well documented. However, the majority of research on cognitive symptoms in cancer has been conducted with early-stage breast cancer patients or survivors in remission. Little is known about cognitive symptoms in patients with late-stage or metastatic cancers. To address this gap in the literature, this study examines cognitive and related symptoms among metastatic breast cancer patients enrolled in a parent study of perceptions of symptom importance and interference. Eighty metastatic breast cancer patients were recruited from the Indiana University Simon Cancer Center to participate in this cross-sectional telephone interview study. The interview consisted of self-report measures, including measures of symptom severity, distress, and the importance of seeing improvement in specific symptoms post-treatment. I hypothesized that cognitive complaints would cluster with fatigue, sleep disturbance, depressive symptoms, anxiety, and pain. This hypothesis was tested using cluster analysis and was partially supported. Cognitive complaints were found to cluster with fatigue, sleep disturbance, depressive symptoms, and anxiety, but not pain. In addition, the extent to which ratings of symptom importance for cognitive symptoms differed from those of other symptoms (i.e., pain, fatigue, sleep problems, depressive symptoms, anxiety, nausea, lymphedema, hot flashes, and neuropathy) was explored using ANOVA and Tukey’s HSD tests. Cognitive complaints were rated as significantly more important than anxiety, depressive symptoms, neuropathy, swelling, nausea, and hot flashes. Importance ratings for cognitive complaints, pain, fatigue, and sleep problems were not significantly different. Developing patient-centered treatment approaches that take into account symptom clustering and patients’ treatment priorities may increase treatment adherence and optimize healthcare quality.