Projective techniques are personality tests that use ambiguous stimuli like ink blots or pictures to reveal hidden emotions and conflicts. Four techniques are described: the Rorschach inkblot test uses symmetrical ink blots and asks subjects what they see; the Thematic Apperception Test shows pictures and asks for imaginative stories; the Time Machine Technique uses a stopwatch to imagine changing the past or future; and the Planets technique guides visualization of visiting imaginary planets to understand feelings and experiences.