Jessica has been treating Paul like a king. She pays for all of their dates, and does lots of special things for him. Paul has not been reciprocating this treatment. How is he likely to be feeling, according to equity theory?

According to Piaget, children develop a sense of self-recognition and a sense of object permanence during the ______ stage

a. preoperational thought c. concrete-operational b. formal-operational d. sensory-motor

When observations are reliably confirmed by multiple observers, this is referred to as

a. multimodal. b. intersubjective. c. multidisciplinary. d. correlational.