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The thesis of this article is that the single psychological test or
test system is a wholly inadequate decision‐aid to address the strategic
problem‐objectives of the people aspect of business. After reviewing the
current uses of the single test the article outlines the properties and
tasks of psychological measurement. It proposes that only the joint use
of several tests relevant to a specific problem objective can improve
the accuracy of management decisions on people in the varied contexts of
business.

Abstract. Flexible barriers can be used within channelized riverbeds as an effective and efficient alternative to protect from debris flows. Their retention capability strongly depends on the size of the mesh openings and the gap between the lower barrier edge and the channel's floor. The question is now whether there is a relation between the grain size distribution of the debris material and the openings of a flexible barrier. Small-scale laboratory tests were performed to study these loading aspects of flexible debris-flow barriers for the Milibach river (Canton Berne, Switzerland). In situ debris material has been used to quantify the influence of different mesh sizes and the gap between the lower barrier edge and the riverbed compared to the d90 grain size and the flow height, where d90 is the maximum diameter of 90 % of the grains. It was possible to study the filling process and the retaining behaviour of the barriers as a function of the mesh size. A reasonable retention was reached with the net having a mesh size and a basal gap smaller than or equal to d90. These relations could be transferred to the field. A dimensional analysis reveals possible dimensionless numbers that can be used to scale the laboratory results. The findings are supported by the results of similar laboratory tests using debris material from different locations and by the available field measurements.

A selection of psychological tests has been presented which form a battery for use in psychological examinations with blind persons. The goal of this battery is to include three areas of testing which consist of the following tests: Intelligence testing: Wechsler Adult Intelligence Scale, Verbal Scale, with the eventual addition of the Performance Scale for Adult Blind; occasionally supplemented by the Hayes-Binet Intelligence Tests for the Blind and by other forms of the Wechsler tests. Manual dexterity testing: Pennsylvania Bi-Manual Worksample; Purdue Peg-board; possibly supplemented by the Minnesota Rate of Manipulation Test and by the Crawford Small Parts Dexterity Test. Personality testing: Sacks' Projective Sentence Completions, Auditory Sound Association Technique; possibly supplemented by the Auditory Projective Test.