Je. Goodwin et Hj. Meeuwsen, INVESTIGATION OF THE CONTEXTUAL INTERFERENCE EFFECT IN THE MANIPULATION OF THE MOTOR PARAMETER OF OVER-ALL FORCE, Perceptual and motor skills, 83(3), 1996, pp. 735-743
This investigation examined the contextual interference effect when ma
nipulating over-all force in a golf-putting task. Undergraduate women
(N=30) were randomly assigned to a Random, Blocked-Random, or Blocked
practice condition and practiced golf putting from distances of 2.43 m
, 3.95 m, and 5.47 m during acquisition. Subjects in the Random condit
ion practiced trials in a quasirandom sequence and those in the Blocke
d-Random condition practiced trials initially in a blocked sequence wi
th the remainder of the trials practiced in a quasirandom sequence. In
the Blocked condition subjects practiced trials in a blocked sequence
. A 24-hr, transfer test consisted of 30 trials with 10 trials each fr
om 1.67 m, 3.19 m, and 6.23 m. Transfer scores supported the Magill an
d Hall (1990) hypothesis that, when task variations involve learning p
arameters of a generalized motor program, the benefit of random practi
ce over blocked practice would not be found.