a method for selecting units of analysis (e.g., participants, organizations) from different areas of a space. The space is divided into four sections and units are drawn from each. In psychology, units may be drawn from psychological space, such as personality variables that are thought of as arrayed in two-dimensional space. See quadrant.
the selection of a vocation, usually on the basis of such factors as parental guidance, vocational guidance, identification with admired figures, trial or part-time jobs, training opportunities, personal interests, and ability tests.