08:30 - 10:00
Wed-H2-Talk 7--70
Wed-Talk 7
Room: H2
Chair/s:
David Framorando
Response inhibition for the basketball pump fake
Wed-H2-Talk 7-7005
Presented by: Carolin Wickemeyer
Carolin WickemeyerIris GüldenpenningMatthias Weigelt
Paderborn University
Surprisingly, even NBA players fall for pump fakes in approximately 73% of the time and initiate erroneous blocking movements (Meyer et al., 2022). To investigate the point where inappropriate defensive movements can no longer be inhibited, Slater-Hammel's (1960) paradigm was modified to construct a basketball-specific anticipation-response task. To this end, 22 participants (8 female and 14 male, 21.8 years old) watched a video of a basketball jump shot (frontal perspective) and were asked to release the space bar at the point when the ball leaves the player's fingertips (go-trials). In 25% of all trials a pump fake was shown, where the player stopped the throwing action prematurely, paused for 50 ms, and moved the ball back to the initial position at hip height (stop-trials). For these stop-trials, participants were instructed to inhibit their responses. Using a stair-case algorithm, the point-in-time when the jump shot was stopped was adjusted in a way that participants’ inhibition rate was at 50% (reflecting the so called “point-of-no-return”, PNR). The entire experiment consisted of three blocks of 200 trials each. The PNR was located 178 ms before the point of ball release. Participants delayed their responses after stop-trials in a subsequent go-trial, regardless of whether participants were able to suppress their response [F(2, 42) = XX, p < .001; ɳp2= .729], which reflects strategic post stop-trial adjustments. In addition, practice effects were found, showing an improvement of precision for go-trials across blocks [F(1.151, 24.177) = 7.897, p = .008; ɳp2= .273].
Keywords: response inhibition, basketball, deceptive actions, anticipation skills, motor control