To provide a further test of the paired-associate analogy to retroactive inhibition in free recall, this experiment investigated the effect of presenting both original learning (OL) and interpolated learning (IL) in either blocked category (B) or random (R) fashion. IL-OL Similar (S), IL-OL Different (D), and control (C) conditions were included.…

The author suggests that it is more efficient to cluster subjects on the basis of their profiles across several dimensions of significance and to seek "between" subgroup correlates, than to search for a moderator variable "within" levels of which criterion relationships may vary in nonrandom fashion. (Author/RK)

Study 1 asked second through sixth graders, who could answer inclusion questions, to answer such questions without empirical information about relative quantity and to predict whether subordinate classes could be made larger than their superordinate classes. In study 2, children's performance in two part-whole domains, classes and collections, was…

Describes how a Michigan school district transformed several free-standing, "warm-weather" high school buildings into clustered areas connected by enclosed corridors. Space is now grouped by instructional area or the use of related equipment, and the building shell is tight and energy-efficient. (MLH)

Construct validity was demonstrated for sixteen career subclusters through factor analysis of an occupational inventory based on interests in professional level job activities. (Author/LMO)

Author proposes cluster grouping as a meaningful, realistic, costly, and viable approach to career education. (GB)

Whereas middle-aged individuals tended to group the entire stimulus array into piles of similar items, the elderly individuals grouped very much as young children do--arranging only a portion of the stimulus array into elaborate designs. (Authors)

Study concerned with the effects of procedural differences on the classification of geometrical stimuli. (Author)

The development of multiplicative classificatory skills in children between 4 and 9 years of age was investigated by means of two forms of the matrix-completion task. (Authors)

Describes methods for effecting the partition of information systems consisting of many components and interconnections into subsystems which are later made to interface with one another achieving an overall system. Clustering algorithms for the specific case of information systems are obtained and exemplified. Twenty-seven references are…

Presents a key for the identification of 21 species of birds at Black Hill Conservation Park in Australia. Example on how to use this key is also presented. (HM)