Determining whether a form of measurement is measuring what it is supposed to be measuring is determining its reliability

A culture-fair IQ test

a. is designed to be used with one particular culture. b. contains material equally familiar to people from diverse backgrounds. c. recognizes cultural differences in the definition of intelligence. d. is impossible to construct, which is why IQ testing is invalid.

The temporary sensitive structuring provided by others to the developing child in learning encounters is known as the zone of proximal development

Indicate whether this statement is true or false.