Twin studies there two types of twin, the MZ(monozygotic twins) and the DZ(dizygotic twins). Twin studies are used to see if behaviour is a genetic cause. So psychologist do this by looking at the concordance rate between the MZ and the DZ twins. If the concordance rate is higher in the MZ twins...

                                            Money Study 1975 Aim To investigate if gender could be reassigned after...

Is autism an extreme male brain condition? Description Autism is a brain disorder that affects a child's abiltiy to interact and build relationship with others. its symptoms include lower language ability than normal, problem with communication and low imaginative thinking ability about three...