Роль рабочей памяти в возникновении эффекта «пропусков при продолжении поиска»
The paper looks at the role of working memory in the effect of “misses in continued search”. The effect consists in missing thesecond target stimulus after a successful detection of the first in a visual search task. One of the theories links the effect to the fact that the detected first stimulus exhausts the resource of the working memory and thus blocks the search. In our study we used a standard working memory task which consisted in memorizing one digit (low working memory load) or six digits (high working memory load) with a subsequent report. A visual search task consisted in looking for the letters T among letters L. There might have been one or two Ts or none at all. The subjects’ task in each trial was to identify the Ts while retaining the information about the digital task in the working memory. The experiment revealed meaningful significance of the number of stimuli, but the factors of the working memory load and interference of stimuli were insignificant. Thus the degree of the effect of “misses in continued search” (the difference between percentage of correct answers in the task with two target stimuli and in the task with one target stimulus) turns out to be the same in all trials irrespective of high or low loading of the working memory. Comparison of the findings of the study with other research data allows a conclusion that the effect of misses is either not linked to working memory or is linked to another memory sub-system. The study also revealed a link between the effect of misses and the number of search stimuli, i.e. the perceptive load of the system of information processing.