EntityQ7915680· pop 7· linked from 357 articlesvariability hypothesisSign in to savenineteenth century hypothesis that males have a greater range of ability than femalesConnectionssociocultural evolutionEntitybehavioral modernityEntityXY sex-determination systemEntitysex differences in psychologyEntitybirdEntityCharles DarwinEntitymammalEntityinsectEntityInternational Standard Book NumberEntityspeciesEntitybutterflyEntitynatural selectionEntitydigital object identifierEntityInternational Standard Serial NumberEntityhuman evolutionEntityvisual perceptionEntityhuman sexual behaviorEntityethologyEntityhuman sexualityEntityintelligence quotientEntityCategoriesBiological hypothesesEvolutionary psychologyHistory of psychologyIntelligenceLawrence SummersPsychological theoriesTheoretical accounts of general intelligence