Repeated computerized cognitive testing: Performance shifts and test-retest reliability in healthy young adults.

Many longitudinal studies entail repeated computerized cognitive testing. However, few of the measures frequently employed for assessing cognitive changes have been examined for within- and between-day retest effects over multiple time points. To address gaps in the repeated cognitive assessment literature, in the current study 20 male undergraduate students completed a computerized cognitive battery 6 times over 3 testing days, each 1 week apart.

Effects of low dose ibogaine on subjective mood state and psychological performance.

Ethnopharmacological Relevance: Root bark from Tabernanthe iboga has been used traditionally in West Africa as a psychoactive substance in religious rituals. In smaller doses it is reported anecdotally to have stimulant properties.

Aim Of The Study: To evaluate the influence of a single 20mg ibogaine dose on psychological variables reflecting subjective mood state and a range of cognitive functions.