Research index·Journal articleBehaviorScience News·2 Feb 1980NobleIDark:/48914/w1/20260516/03502015DOI10.2307/3964859Journal articleBehaviorScience News · 1980 · SubscriptionNobleIDark:/48914/w1/20260516/03502015DOI10.2307/3964859ReadRead at the publisherSaveCiteAdd to literature reviewPaywalledThe full text is at the publisherOpen it at the publisher to read it.Read at the publisherDiscussionAdd to the discussionTopicsPsychologyRelated papersMoreDetailsPublished, publisher, issueSuggest a correction or report