Peer reviewedERIC Number: EJ262063
Record Type: Journal
Publication Date: 1982
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On the Concepts of Period, Phase, Stage, and Level.
von Glaserfeld, Ernst; Kelley, Michael F.
Human Development, v25 n2 p152-60 Mar-Apr 1982
It is suggested that four developmental terms (period, phase, stage, level) can be distinguished as different combinations of four criterial elements, and they should be differentiated according to whether or not they refer to (1) a part of a progression, (2) a recurrent state or event, (3) quantitative change, and (4) qualitative change. (Author/RH)
Publication Type: Journal Articles; Opinion Papers
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Language: English
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