Psychomotor disturbance in depression: defining the constructs.
Four hundred and thirteen depressed patients were rated on eighteen signs of psychomotor disturbance, and the data examined by factor analyses. A three-factor solution was favoured. In addition to 'retardation' and 'agitation' dimensions (whose derived factor scores suggested independence of those two dimensions), a third 'non-interactive' dimension was evident--with derived factor scores correlating significantly with both the retardation and agitation dimensions. Thus, a 'trunk and branch' analogy was suggested for construing psychomotor disturbance, with a truncal 'psychic' component arborising into retardation and agitation 'motoric' expressions. Higher scores on all three factors were significantly linked with features weighted more to the melancholic 'type' of depression.
Mood Disorders Unit, Prince Henry Hospital, Sydney, Australia.
G
G
Parker
D
D
Hadzi-Pavlovic
H
H
Brodaty
P
P
Boyce
P
P
Mitchell
K
K
Wilhelm
I
I
Hickie
K
K
Eyers
D000275:Adjustment Disorders / Q000175:diagnosis / Q000523:psychology; D001008:Anxiety Disorders / Q000175:diagnosis / Q000523:psychology; D001143:Arousal; D001714:Bipolar Disorder / Q000175:diagnosis / Q000523:psychology; D003702:Delusions / Q000175:diagnosis / Q000523:psychology; D003866:Depressive Disorder / Q000175:diagnosis / Q000523:psychology*; D005260:Female; D006212:Hallucinations / Q000175:diagnosis / Q000523:psychology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009042:Motivation; D011569:Psychiatric Status Rating Scales; D011595:Psychomotor Agitation / Q000175:diagnosis / Q000523:psychology; D011596:Psychomotor Disorders / Q000175:diagnosis / Q000523:psychology*; D011618:Psychotic Disorders / Q000175:diagnosis / Q000523:psychology