“…Unfortunately, Cook's summary hardly needs to be updated a quarter-century later. The expansion of research on gaze seems to have been virtually limited to the period Cook described (e.g., Argyle & Cook, 1976;Davey & Taylor, 1968;Duncan & Fiske, 1977;Ellsworth & Carlsmith, 1968;Ellsworth & Ludwig, 1972;Kendon, 1967;Kendon & Cook, 1969;Kleck & Nuessle, 1967;Knapp, Hart, Friedrich, & Shulman, 1973;Mobbs, 1968;Scherwitz & Helmriech, 1973) with the last major review in 1986 (Kleinke, 1986). By then, a bifurcation common to research on nonverbal communication was already obvious, dividing the research into two distinct approaches: (a) A minority of studies focused on the function of gaze in the dialogue itself, using microanalysis to examine the relationship of gaze to the immediately surrounding audible and visible behaviors (e.g., Goodwin, 1981); and (b) the majority of studies examined gaze in relation to other variables external to dialogue, for example, correlating the amount of gaze to interpersonal attitudes, emotions, or personality differences (e.g., Argyle & Cook, 1976) or studying the effects of staring at strangers in public (Ellsworth, Carlsmith, & Henson, 1972).…”