Two sealed, pyramid-shaped beakers contain what are clearly identical amounts of a liquid. However, a child suddenly judges them as holding different amounts of liquid after one of the beakers is inverted. The child apparently lacks a .

Concept of Conservation

Explanation:

Concept of conservation is the cognitive ability that helps a child to judge that some properties such as number of items, or volume will remain the same and invariant even if the shape or size of the container is changed or adjusted. This concept was posited by Jean Piaget, a psychologist who noted this ability in children between ages 7 to 11 during their concrete operational stage. He posits that the cognition of these age group will only focus on the noticeable attributes (e.g numbers, volume lenght) of an object rather than any change in size or other attributes

In this question the child lacks the concept of conservation with the inability to judge that the two beakers contain clearly identical volume of a liquid.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

is there answer choices?