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ABSTRACT Two important trends are occurring in respect to scientific research in the field of psychology: 1) An increased focus on replication to facilitate psychological science as a self-correcting process, and 2) The exploration of quick and cost-effective methods to collect data using online systems such as Mechanical Turk. My thesis explores both of these issues in light of a recently reported study demonstrating that verb aspect use when describing past experiences (positive or negative) can modulate feelings of happiness and positive mood. Given the potential benefits of these findings to the understanding of well-being and methods to improve health, this thesis attempts to replicate these results online. The results generated by this thesis indicates a failure to replicate the results found in the previous study (though the general pattern of means produced the expected pattern). Verb aspect use did not significantly interact with task difficulty to influence current feelings of positive affect. However, Mechanical Turk was sensitive enough to pick up other expected relationships. Participants who completed a more difficult anagram task reported a significantly more negative affect afterward. Other expected relationships were observed with respect to satisfaction with life, happiness, and positive and negative affect. However, it is premature to suggest that the verb aspect adopted when describing previous experiences does not have an effect on mood/happiness. Methodological differences may explain the reported failure to replicate (e.g., online vs. in person). Implications and future direction are discussed in the conclusion section.