Little evidence is provided for cognitive changes in children over the last 70 years. (Authors)

Compares the ages at which infants living under different conditions in two orphanges in Athens, Greece achieve levels of object construction and imitation, both verbal and gestural. Home-reared infants of the same age range were also examined using two of the Uzgiris-Hunt Ordinal Scales of Infant Psychological Development. (WY)

Reports a study involving 35 learning-disabled boys attending full-time remedial schools and 35 matched normal achievers to investigate whether learning-disabled children differ from normal achievers in terms of logical thought and whether they exhibit decalages in their acquisition of Piagetian concepts. (BD/BR)

Compared institutionalized and public school retardates to normal elementary and high school students at several mental age levels on three conservation of weight tasks. (Author/SDH)

Authors interpret the evidence from the three experiments to mean that highly cognitively structured small-group activities have positive effects upon cognitive development, at least for a relatively short period of time. (Authors)

The use of assisted reproductive technology is increasing rapidly. Research, although sparse, has resulted in inconsistent findings as to the developmental prognosis for infants conceived by assisted reproductive techniques such as in vitro fertilization and the use of fertility drugs. In the present study, the authors compared twins who were…

In this study 610 kibbutz and city boys and girls from grades 3 to 6 were compared on the following variables: stages of moral judgment, external reactions to transgression (fear and punitiveness), and internal reactions to transgression (guilt and confession). (Author/MP)