Several days ago I have got a letter from the journal “Cognitive Psychology” suggesting to take a look at the most downloaded articles from this journal in the last 90 days. The list from April 28 includes 25 articles published from 1972 to 2018 (see the file attached). The distribution of the articles within this period is far from uniform. Nine articles were published in 1972-1980. Eight articles were published in 1981-2015 and 8 articles were published after 2015. The inclusion of the eight articles which were published recently, probably reflects the fact that these articles are new and many scientists are in process of familiarizing with it yet. However, the inclusion of most of these articles in the list seems temporary because in the period from 1981 to 2015 more than four years were necessary, on average, to add one article to the list.

One may suggest that the nine articles published in 1972-1980 are downloaded by students who learned on these old articles from textbooks and lections where the papers are described as important and ground-breaking . This suggestion is probably correct. A long period of time is often necessary to estimate the importance of a scientific article. Forty years are a very long period. Thirty years seem to be a very long period too. Therefore, it is unclear why those textbooks mention articles published in the 1980s much less often than ones published in the 1970s. The answer may be associated with changes in psychology denoted as the cognitive revolution. For several decades behaviorism dominated in psychology and the studies of cognition were neglected. Only in the 1960s research on cognition became intensive and in the 1970s, cognitive science had surpassed behaviorism as a main psychological paradigm. It seems that the papers published in the 1970s became ground-breaking because at that time the authors of these texts were, to some extent, pioneers exploring a new land when every step may result in discoveries. But what happened afterwards? Why was the rate of the publication of famous articles in Cognitive Psychology abruptly decreased in the 1980s?

A simple answer that in the 1980’s the journal lost its status as a very important outlet for cognitive scientists is hardly correct because Cognitive Psychology has a high impact factor. Two hypotheses seem possible. One hypothesis is that already in the 1970s main results in cognitive psychology were obtained and basic theories were formulated. Since then generations of scientists have only polished those achievements. I don’t believe that most of cognitive scientists concur with this assumption. The other hypothesis is that there are fundamental problems in cognitive psychology which have blocked progress in the discipline after its restart in the 1960s. Might human cognition be, in general, unknowable? Might experimental methods used in cognitive psychology be ineffective? Might basic theories in the discipline be totally incorrect? Other reasons?

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