In 1954, the u. s. supreme court ruled that schools must be desegregated, meaning black and white children must attend the same schools instead of being separated. in its decision, the court cited the expert testimony of two psychologists, illustrating the negative impact of such separation on black children. this example illustrates that psychology

What was piaget's explanation as to why preschool-age children in the preoperational stage make errors on tasks requiring conservation? a) preschool children's tendency toward centration prevents them from focusing on other relevant features of a situation b) preschool children have not yet developed numerical understanding; therefore, different amounts are meaningless c) preschool children's neural-visual network is not fully matured d) preschool children have not lived long enough and accrued enough experience to know the difference between quantities