The issue of this study is a preliminary report on the replication of the r
esearch conducted by Chmelai and Osecky (1971, 1971 a). A slightly modified
experimental method to the method used by previous studies was employed. T
he probability characteristics of the attention time course were identified
by means of a computer test which can be interpreted as parameters of the
Markov process. The fundamental findings seem to be the same as in the prev
ious studies.