Abstract We examined social cognition in 32 monozygotic (MZ) and 21 dizygotic (DZ) twin pairs concordant or discordant for a The Effect of Cognitive Task, Gait Speed, and Age on Cognitive–Motor Interference during Walking schizophrenia spectrum diagnosis and healthy control (HC) twin pairs (29 MZ/20 DZ).All participants were recruited through the Danish registers.Patients showed several deficits in Risk Factor Profile of Motorcycle Crash Victims in Rural Kenya the ability to detect sarcasm.Impairments were also observed in the unaffected MZ co-twins, indicating that social cognitive deficits could be a genetic vulnerability indicator of the disease.Worse social cognition was associated with lower intelligence and higher levels of psychopathology in patients.