Tinnitus is a common condition, characterized by the perception of ringing or noises in the head without an external source, that impacts numerous individuals worldwide, including those in Canada. The variability in tinnitus distress levels is thought to stem, at least in part, from diverse personality traits and the resulting emotional reactions to the condition. This study contributes to the growing body of research investigating the individuality of tinnitus sufferers and seeks to shed light on specific factors that contribute to their levels of associated distress. The investigation focused on two main factors: Desire for Control (an individual’s general inclination to assert control over life events) and Self-Efficacy for Tinnitus Management (confidence in effectively handling and managing tinnitus). The primary objective was to uncover any associations among these two factors and a patient's level of tinnitus distress. By understanding how these constructs interrelate, a deeper understanding of contributions to distress among those grappling with tinnitus can be gained. The significance of this research lies in its potential to enhance the support and interventions provided to tinnitus patients by healthcare professionals. An online survey collected responses from 130 Canadian adults regarding their health status and experiences with tinnitus. The study confirmed a robust correlation between the Self-Efficacy for Tinnitus Management Questionnaire (SETMQ) scores and the extent of distress experienced by individuals with tinnitus. The SETMQ, therefore, holds promise as a valuable instrument for identifying domains in which patients could benefit from additional support to alleviate their tinnitus-related distress. The study also revealed that there was no correlation between generalized desire for control and tinnitus-related distress. These results suggest the need for a new Desirability for Control scale similar in tinnitus-specificity to the SETMQ. / Thesis / Master of Science (MSc) / Tinnitus comes from the Latin verb “tinnire” which means “to ring”. It is often described as a persistent ringing in the ears that has no external source. Some, but not all, people find their tinnitus debilitating. This study examined whether people who strongly desire control but lack confidence in managing their tinnitus, experience higher stress because of it, compared to those with lower control needs or higher self-confidence. The results showed that having confidence in managing tinnitus is correlated with having lower distress, but there is no definite conclusion regarding the need for control. The results of this study suggest that a new method to measure the desire for control in a context specific to tinnitus is needed.

The purpose of the current studies was to determine whether "matches", or fit, between actual task control and participants' desire for control over their environment lead to better stress and task performance outcomes than "mismatches", or misfit, in high work demand environments only. These studies also investigated the mediating effects of cognitive stressor appraisals and stress, as well as the moderating influence of hardiness on threat appraisals. Data were collected on 366 undergraduate students, who were asked to complete individual difference measures and engage in timed performance tasks. Results indicated no significant interactions between actual task control and desire for control for the outcomes of cognitive stressor appraisals, experienced stress, or task performance. No mediating influence was found for cognitive appraisals or stress, nor was there a buffering effect of hardiness on the cognitive appraisal process. Despite the non-significant results, the effects on task performance trended in the predicted direction in both studies, such that the highest task performance was found in cases of match between actual task control and desire for control, whereas the lowest task performance was found in cases of mismatch. These findings yield some support for Person-Environment Fit theory, demonstrating that actual task control and desire for control should be considered together when predicting task performance in workplace contexts.