flattened, and physiologically hypoaroused. The relevant

research is discussed below.

E'.'alu(L ti of emt: t icn

 Most of the research in support of the global right

 hemisphere view of emotion has arisen from investigations of

 evaluation and perception of affective stimuli (i.e., facial

 expression and emotional prosody). Many patients with RHD

 have impairments in identifying and discriminating facial

 expressions. This research was initially conducted by

 DeKosky, Heilman, Bowers, and Valenstein (1980) and has been

 consistently replicated across other laboratories (Cicone,

 Wapner, & Gardner, 1980; Etcoff, 1984; Bowers, Bauer,

 Coslett, & Heilman, 1985). From an historical perspective,

 one critical issue was whether the RH superiority in

 identifying facial expressions was secondary to the role of

 the RH in mediating complex visual configurational stimuli.

 Evidence against this view point comes from covariance

 studies, individual case reports, and studies which find RHD

 patients impaired in identifying facial affect when it has

 been verbally described.

 First, in covariance studies, visuoperceptual ability

has been controlled for and equated statistically. In these

studies, deficits in RHD patients in recognition of

affective facial expressions have been observed above and

beyond deficits in visuoperceptual ability (Ley and Byrden,

1979; Bowers et al., 1985). Second, case descriptions have