A test of retroactive inhibition as an explanation of contextual interference.
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Adult↗
Biomedical subjects
P A Shewokis
Publications and source records attributed to P A Shewokis.
Is the contextual interference effect generalizable to computer games?
The benefits of learning multiple tasks under an unstructured practice schedule have been extensively demonstrated in the laboratory. The purpose of the present study was to test contextual interference effects in a nonlaboratory setting using computer games as tasks. Undergraduate kinesiology and sport management majors (N = 19) played a computer game simulating the events of the winter Olympics. Participants were randomly assigned to either a Blocked or Random practice schedule, practicing 36 trials of three events. Delayed retention and transfer tests were performed after a 48-hr. retention interval. The dependent variable was time to complete an event. During transfer, participants in the Random schedule (M = 248 sec.) were significantly faster than Blocked (M = 263 sec.) participants. Results support and extend previous contextual interference findings. Transfer was facilitated for participants who learned the events in a Random practice order. Results are discussed in terms of the influence of task characteristics on learning.
Computers↗
The paradox of the contented working woman in intercollegiate athletics administration.
We investigated the paradox of the contented working woman among middle and first-line intercollegiate athletics administrators. In this paradox, women report lower salaries than men but express comparable job satisfaction. The sample comprised 143 women and 371 men in 106 National Collegiate Athletic Association (NCAA) Division I-A institutions. Job satisfaction was measured with the Job Descriptive Index (Smith, Kendall & Hulin, 1969) and Job in General (Ironson, Smith, Brannick, Gibson & Paul, 1989) scales. Analyses revealed the existence of the paradox: Women were paid significantly less, but were equally satisfied with their jobs. Neither gender was satisfied with promotion opportunities or pay, but both were highly satisfied with their jobs in general--another apparent paradox. The disproportionate number of male respondents raised questions about gender equity in athletics administration.
Administrative Personnel↗
Factors influencing rearfoot kinematics during a rapid lateral braking movement.
Understanding the morphological, movement, and biomechanical characteristics that influence rearfoot motion during lateral movements is necessary for footwear design and for the determination of injury mechanisms. The purpose of this study was to identify factors related to rearfoot kinematics during a lateral braking movement. Seven highly skilled male tennis players performed 24 trials of side shuffle movements at various speeds. A rear view of the right leg performing a braking step onto a force platform was filmed. The neutral-O landing style was most commonly demonstrated. Average movement velocity, foot velocity at touchdown, and body mass were variables demonstrating weak or nonsignificant correlations with the rearfoot parameters. Although structural inversion was correlated significantly with the maximum rearfoot angle and velocity (r = -0.52 and -0.69), the results were affected by movement speed and sample size. The biomechanical characteristics displayed the greatest influence on the various rearfoot kinematic parameters. The magnitude of the significant (P less than 0.0001) correlations generally decreased in the following order: maximum horizontal and vertical force gradients, corresponding times to the maximum gradient values, maximum horizontal and vertical forces, and the corresponding times to maximum forces. In conclusion, the gradient-associated parameters were the most useful biomechanical parameters for predicting changes in rearfoot kinematics.
Biomechanical Phenomena↗