There is a subgroup of chronic insomnia sufferers who consistently report extended periods of little or no sleep with no evidence of objective sleep disturbance and without the level of daytime impairment commensurate with the degree of sleep deficits reported. This is the defining characteristic for the diagnosis of Paradoxical Insomnia in the International Classification … + read more
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Insomnia Theory
Feb 20, 2013
Sleep & Circadian Functioning
Allison Harvey has published an important article in the 2011 edition of Annual Review of Clinical Psychology titled “Sleep and circadian functioning: Critical mechanisms in the mood disorders.” She identifies seven lines of research which bear on the relationship between sleep and mood disorders: sleep disturbance is a risk factor and early warning signal of … + read more
Feb 12, 2013
Four Conceptual Models for Insomnia
I think of insomnia from 4 different and overlapping perspectives. First, the Spielman 3P model, a model of progression from normal sleep to chronic insomnia via predisposing, precipitating and perpetuating factors. This model is useful for describing the course of the insomnia and focuses treatment on those behaviors that are identified as perpetuating sleeplessness. Second, … + read more
