Reported is discussion of the biological effects of a new Panama canal. (BB)

Examines how a teacher in one Oxfordshire primary school lays the foundations for literacy. (Editor/RK)

Ferguson's concept of diglossia and its later extension and coupling with bilingualism is developed further into the concept of polyglossia with multilingualism by a discussion of various speech communities where these phenomena are in evidence. (Author/HP)

The Segal Interaction Analysis Scale (SIAS)--a categorization of verbal behaviors--is described and its uses indicated for promoting effective and productive group discussions. (MB)

Ways to provide the social advantages of the small group home with those of the larger institution are being utilized at one community-based residence serving 40 profoundly and severely mentally retarded children. (DB)

A group of student teachers and their subgroups were categorized on the basis of priorities assigned to expectations arrayed in a 60-item Q sort. Highest priority was attached to items reflecting direct and positive interaction with pupils. Based on lower level priorities, three types of student teachers were distinguished. (JC)

Provided is an activity for student-constructed dichotomous keys that requires nothing more than a pile of shoes. Examples and directions are given. (MA)

Two experiments with third to sixth grade children were undertaken to test three predictions derived from the assumption that children may fail to solve union problems because addition of classes is not implied when classes to be combined overlap. (SB)

Neurometric procedures devised to achieve the goals of neurometrics, detailed in this article are described. The results of research obtained from patients with neurological problems, discusses elderly persons with cognitive empairment, and children with learning disabilities are presented. (BT)

The relationship of personality to performance in sports activities appears to be limited. (MB)

The territoriality and aggression of 25 profoundly retarded institutionalized adult males were measured in an examination of potential grouping procedures. (CL)

Evaluation of classification skills of 88 unimpaired children (grades K, 2, 4, and 6) were evaluated using the Iconic-Symbolic test (IS) of the Muma Assessment Program and follow-up interviews. Results found little relationship between the rationales the children reported using and the classification criteria presumed by the IS procedure. (DB)

A 20-item Piagetian-type sorting task was presented to 12 unilaterally brain-injured adult patients and 12 non-injured controls. The left hemisphere brain-injured subjects and the controls showed preferences for the features of shape and texture. In contrast, the right hemisphere brain-injured subjects preferred the feature of size. (Author)

Establishes two categories of numbers: (1) relatively frequent numbers and (2) relatively infrequent numbers. The numbers in the first group are manipulated by people and depend, at least to some degree, on memorization; those in the second group are essentially machine inputs. Examples of the first group are examined. (SED)