Three experiments investigated the dynamics of human infant visual fixation. Results showed that, over a series of trials, four-month-olds fixate longer on a complex than on a simple stimulus. Findings challenge prevailing cognitive-schema theories as a complete account of the dynamics of infant visual fixation. A two-process theory that accounts…

To determine how hard it is for computers to solve problems, researchers have classified groups of problems (polynomial hierarchy) according to how much time they seem to require for their solutions. A difficult and complex proof is offered which shows that a combinatorial approach (using Boolean circuits) may resolve the problem. (JN)

Concludes that, in the organizations studied, complexity cannot be satisfactorily predicted or fully understood without reference to the economics of scale, but that it is neither theoretically convincing nor statistically demonstrable that size in itself is the major determinant of formalization. (Author/JN)

"The usefulness of a structural analysis of pretest items in designing an instructional system is illustrated by the application of this technique to 100 addition computation problems. (Author)

Based on an M.A. degree submitted to McMaster University, England.

Focusing on the precise grounds on which a person can be said to have solved a problem, six conditions are articulated which govern the application of the concept and its relationship to trying and intention. The "solving" concept is found in synonymous phrases such as "figuring out" and "finding the solution." (Author/CM)

The Minnesota Multiphasic Personality Inventory was analyzed by readability formulas which represent varying criterion of comprehension from 50 to 90 percent. If an examiner wishes to ensure 90 percent comprehension of the inventory items, nine years of successful schooling seem necessary. (Author/SJL)