A major open question in natural language research is the role of communicative efficiency in the origin and on-line processing of language structures. Here, we use word pairs like "chimp/chimpanzee", which differ in length but have nearly identical meanings, to investigate the communicative properties of lexical systems and the communicative…

In 3 experiments, 9-month-old infants' expectations for what distinct count noun labels refer to were investigated. In Experiment 1, a box was opened to reveal 2 objects inside during familiarization: either 2 identical objects or 2 different objects. Test trials followed the same procedure, except before the box was opened, the contents were…

A group of 19 subjects was exposed to a verbal passage for learning that contained associatively related words, while a second group of 19 subjects was exposed to the identical passage but with high association (HA) words replaced by low association (LA) words. A written prompted recall test followed presentation. Group HA had as prompts all of…

A theoretical explanation of the phenomenon of recognition failure and a presentation of seven experiments investigating performance. Recognition failure is reduced when a more stringent recognition criterion is used, essentially eliminated when the proper access test is used and significantly reduced when variability in recognition performance is…

Two experiments on unaided and cued recall of sentences presented in context to college students are reported in this study. Key nouns in the sentences were arranged to have uniform surface functions, but to vary independently in deep syntactic category and semantic function. Cued recall for sentences in which the semantic function of actor and…

Argues that first language acquisition is essentially based on a process very similar to classical conditioning. (TO)

Two experiments aimed at extending the principles of paired-associates learning transfer to the acquisition of reading skills are reported. Approximately 15 first graders were randomly assigned to each of the 10 treatment conditions. In the first experiment, four types of letter training were compared to two control conditions. The experimental…

Describes a paired-associate learning experiment in which American Sign Language signs of high and low translucency and high and low cheremic similarity were presented to sign-naive subjects. One hypothesis, that translucency would facilitate learning, was confirmed; a second, that cheremic similarity would retard sign learning, was not.…

Free-association norms for 200 words were obtained in 1964 from the responses of 500 subjects in each of grades four through eight, 10, and 12 and from 1,000 college students. An analysis of this normative data revealed that (1) the frequency of occurrence of the most popular associative responses to stimulus words increases with the age of the…

The effects of three types of pretraining in the use of syntactical verbal mediators on subsequent paired-associate performance were investigated. Subjects were 40 Negro and 40 white first graders randomly assigned to one of four groups. Condition 1 consisted of pretraining in both "mediation" instruction (experimenter gave subjects a sentence…