Psychology Commons^™

Imidacloprid Impairs Performance On A Model Flower Handling Task In Bumblebees (Bombus Impatiens), Jordan D. Phelps

Electronic Thesis and Dissertation Repository

Bumblebees exposed to neonicotinoid pesticides collect less pollen on foraging trips. Exposed bumblebees are also slower to learn to handle flowers, which may account for reduced pollen collection. It is unclear, however, why neonicotinoid exposure slows learning to handle flowers. I investigated the effect of imidacloprid, a neonicotinoid pesticide, on bumblebee motor learning using a lab model of flower handling. Bumblebees learned to invert inside a narrow tube and lift a petal-shaped barrier to reach a reward chamber. Imidacloprid-exposed bumblebees showed a dose-dependent delay to solve the task, which resulted from reduced switching between behavioural strategies and a subsequent delay …

Standing And Dynamic Sitting In The University Classroom, Siobhan Smith

Electronic Thesis and Dissertation Repository

Students almost exclusively sit in class, which translates to large amounts of forced sedentary behaviour and this in turn may have negative health consequences. The effect alternative postures have on classroom performance of university students remains unknown.

Using a randomized counterbalanced design, pilot study 1 (N=40) and 2 (N=20) investigated the effect of alternative postures on 3-minute and 50-minute classroom performance, respectively. In study 3, university students’ (N=1005) and faculty (N=218) acceptability to alternative workstations in the university classroom was assessed using a mixed method approach.

This thesis provides preliminary evidence that there is no difference between classic sitting, dynamic …