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.
Parker
G
G
Mood Disorders Unit, Prince Henry Hospital, Sydney, Australia.
Hadzi-Pavlovic
D
D
Brodaty
H
H
Boyce
P
P
Mitchell
P
P
Wilhelm
K
K
Hickie
I
I
Eyers
K
K
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