Search results for "intellectual quotient"

O2.1. FIRST EPISODE PSYCHOSIS PATIENTS ACROSS EUROPE DIFFER IN INTELLECTUAL QUOTIENT (IQ) AND EXPOSURE TO ENVIRONMENTAL HAZARDS

2018

Abstract Background Children who later develop Schizophrenia on average are more likely to present with lower IQ; this has been considered evidence for the neurodevelopmental theory of schizophrenia. Though, recent studies have shown that first episode psychosis patients with a history of cannabis use have significantly higher premorbid and current IQ compared to those who never used it. This suggests that abnormal early neurodevelopment does not explain the aetiology of all cases of Schizophrenia, leaving space to environmental hazards. The present study aims to: investigate differences in IQ, as a marker of neurodevelopment, and in exposure to environmental risk factors in a large sample …

Cannabis Users and Premorbid Intellectual Quotient (IQ)‏

2017

• The chapter focuses on premorbid Intellectual Quotient (IQ) in cannabis users, one of the most controversial topics in studies on the harmful effects of cannabis use on cognition. • Several studies have ascertained acute and residual effects of cannabis use in the memory domain, but only a minimal general cognitive effect after a long-term period of abstinence. • A number of longitudinal studies were able to obtain IQ measures before and after cannabis consumption, but they yielded discordant findings. • Authors, however, observed a relationship between higher premorbid IQ and recreational or discontinued use while a lower premorbid IQ resulted as a predictor for regular or heavy cannabis…

PREMORBID ADJUSTMENT AND CANNABIS USE IN FIRST-EPISODE-PSYCHOSIS PATIENTS. A CROSS-EUROPEAN CASE-CONTROL STUDY

The harmful effects of cannabis use and possible neuropsychological impairment associated with its use are a contentious topic of debate in both research and public health,as is thefact that cannabis use has been repeatedly shown to be a risk factor for the development of psychosis. Surprisingly, three different meta-analyses on cognition and cannabis, among schizophrenic patients, found better cognitive performance in patients with a lifetime use of cannabis (Potvin, Joyal, Pelletier, & Stip, 2008; Rabin, Zakzanis, & George, 2011; Yücel et al., 2012). This counterintuitive finding, coupled with the fact that most psychotic patients suffer from cognitive impairment (Reichenberg et al., 2009…