Dr Gonzalez Devised a New Scale to Measure Depressive Symptoms

Dr. Gonzalez devised a new scale to measure depressive symptoms among Hispanic females. To be sure that his test is actually measuring depressive symptoms, he will have his test group respond to his new instrument and the Beck Depression Inventory, as well as completing a social desirability scale, which should be unrelated to depression. Dr. Gonzalez is ____.

A) checking the validity of his measure of depressive symptoms
B) checking the reliability of his measure of depressive symptoms
C) assessing the honesty of his participants
D) pursuing idiographic research