Adoption studies are often used when attempting to study the influence of genetic factors on psychological disorders because these studies allow examination of genetic influences of psychopathology...A) Without the typical confound of siblings raised in the same environmentB) Without the typical confound of common biological parentsC) Through direct examination of genetic causesD) Using more sophisticated statistical techniques

Children begin to use tools at about what age? a. 18 months b. 2 years c. 1 year d. 6 months

Which statement best describes evidence of a mulitcultural mix in east africa? a. because of what he learned during his pilgrimage to mecca, mansa musa was able to build a center of islamic scholarship. b. the traders of ghana brought back with them slaves from the mediterranean who taught the ghana rulers about christianity. c. clans were made up of lineages that were descendants of multiple ancestors from different regions of africa. d. swahili became a language made up of words spoken by traders along the coast of the indian ocean.

As of 2013, the world’s total population was about