Weeds pose a challenge to cotton production, and herbicides have been the primary means of control. However, there is growing concern over weed resistance to herbicides. To address this issue, we evaluated three cover crop species and six cotton accessions for weed suppression. The study found that hairy vetch, wheat, and B16 cotton CS line effectively suppressed Amaranthus species, while MNTN 4-15, B16, hairy vetch, and wheat were correlated with the highest cotton yield. Cover crops were also analyzed for chlorogenic acid content, with wheat, MNTN 4-15, and hairy vetch producing the highest amounts. The greenhouse tray study showed that wheat and hairy vetch cover crops were among the best treatments for weed suppression. These findings suggest that cover crops may provide effective weed control and improve crop yield.

Recent biomedical advancements, cultural practices, and individual preferences have altered the ways in which biological process such as menstruation are perceived and managed. Increasingly, women are interested in suppressing menstruation to alleviate its negative symptoms, including bloating, menstrual cramps, fatigue, and irritability. This topic is especially relevant for adolescent girls, as mothers and daughters might have to negotiate attitudes towards daughters’ menstrual suppression. Therefore this study aims to examine how this topic is discussed and understood within the mother-daughter dyad. It is also important to consider how these attitudes are shaped by cultural background, ethnicity, socioeconomic class, and religion. Through this knowledge health care providers can have a more holistic understanding of how their patients’ view menstruation. If health care providers know these basic demographics and the perspectives on this issue, they can be better prepared in administering information and educating their patients. My data collection included literature review, a five category survey, and participant observation in a clinical setting. There were 72 mother-daughter pairs with a total of 144 participants that completed designated surveys for mothers and daughters that had a total of five categories emphasizing participant details, menstrual cycle, reproductive health history, attitudes towards their period and menstrual suppression. Through the experiences of my participants I have found that there is a great desire to learn more of menstrual suppression among both mothers and daughters and that there is some degree of influence of religion and ethnicity on perceptions of menstrual suppression in this population. Age on the other hand, turned out to not be an important factor shaping the positive or negative attitudes toward suppression.

The intent of this thesis is to explore the perceived discrepancies between individual scores of psychopathy, particularly the division of primary and secondary psychopathy, and how such scores may moderate the relationship of one's emotional experiences with the corresponding emotional expression. There is evidence to consider that a person's working memory ability and/or volitional suppression of expression may also moderate this relationship and result in constricted emotional expression, a trait often found in primary psychopathy. Undergraduate participants completed the study online, and after exclusions, a final sample size of 126 participants (62.7% women) was used in analyses. An initial linear regression found that primary psychopathy severity showed a negative relationship with performance on a visuo-spatial n-back test of working memory. While age did not relate to expression, women reported a greater strength of expression for both negative and positive emotions than men. Using hierarchical linear regressions, a significant four-way interaction was found between primary psychopathy severity, working memory performance, degree of volitional expression suppression, and internal emotional experience, in predicting the strength of expressing negative emotions. Analysis of simple effects revealed that, for participants scoring higher in primary psychopathy (n = 63), there was a significant three-way interaction for experience of negative emotions, the use of emotional suppression, and working memory performance in predicting the strength of expressing negative emotions. Simple effects of this interaction showed that for a subgroup who were higher in primary psychopathy and volitional suppression of emotional expression (n = 25), there was significant negative relationship between the frequency of experiencing negative emotions and the strength of expressing those emotions. There were no significant interactions involving secondary psychopathy severity or variables relating to positive emotions in any regression. The findings of this study could be useful for future research on psychopathy as it relates to understanding the characteristics and functioning of individuals with psychopathy.

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