Six college-age male subjects performed one hundred, two-minute trials on a second-order tracking task. After each trial, subjects estimated perceived workload using both the NASA TLX and SWAT workload assessment procedures. Results confirmed an expected performance improvement on the tracking task which followed traditional learning curves within the performance of each individual. Perceived workload also decreased for both scales across trials. While performance variability significantly decreased across trials, workload variability remained constant. One month later, the same subjects returned to complete the second experiment in the sequence which was a retention replication of the first experiment. Results replicated those for the first experiment except that both performance error and workload were at reduced overall levels. Results in general affirm a parallel workload reduction with performance improvement, an observation consistent with a resource-based view of automaticity.
This study examines diphenhydramine (DPH) use by analyzing data from the r/DPH subreddit. The objective is to enhance understanding of DPH use patterns, provide insights for prevention and intervention, and raise awareness among clinicians. Analysis of the subreddit revealed 19,004 authors contributing 233,028 posts between 2014 and 2022, with users primarily from the United States and Europe. Qualitative analysis explored motivations, experiences, and consequences of DPH use. This study sheds light on the experiences of recreational DPH users, highlighting the need for improved identification and treatment strategies. By utilizing platforms like Reddit, a broader spectrum of DPH misuse is captured, including chronic and moderate misuse often overlooked by traditional assessments.
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