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SYSTEMATIC CHANGES IN LEVELS OF PHYSIOLOGICAL ACTIVITY DURING A FOUR‐MONTH PERIOD
Author(s) -
Wieland Betty A.,
Mefferd Roy B.
Publication year - 1970
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1970.tb02255.x
Subject(s) - psychology , period (music) , developmental psychology , acoustics , physics
Intraindividual differences over a four‐month period in a number of physiological variables for three subjects are examined. Autocorrelation techniques revealed the presence of systematic changes (cycles and trends). It is concluded that intraindividual differences in these variables may be nearly as large as interindividual differences and that they cannot be explained merely as errors of measurement. Possible sources of variability are discussed.