| Description | Researchers | Year |
| Latent Inhibition is abnormal in Schizophrenia | |
| Meta-analysis of over 40 studies which found that MZ twins and offspring of schizophrenic parents are at high risk. MZ concordance rate = 35-38% | |
| Adoption study involving 5483 Danish children, 32% of those with schizophrenic biological parents developed schizophrenia | |
| Children of older fathers are more at risk of developing schizophrenia | |
| About 60% of schizophrenics have no relatives with the disorder | |
| Rates of concordance in twins- MZ = 53%, DZ = 15% | |
| Adoption study involving 47 children of schizophrenic mothers. 5 children developed schizophrenia | |
| Study that found linkage between schizophrenia and chromosomes 1 and 11 | |
| Found that a drug used to prevent surgical shock also reduced anxiety. This led to the development of chlorpromazine | |
| Meta-analysis of 77 studies found 53% relapse in those who stopped taking antipsychotic drugs, compared to 16% in those who didn't stop | |
| Schizophrenic dopaminergic neurons release more DA | |
| First researchers to discover Dopamine through animals treated with L-Dopa | |