Final answer:
The instinct theory of human motivation was replaced by the drive theory of motivation, which emphasizes the role of physiological needs and psychological drives in motivating behavior.
Step-by-step explanation:
The instinct theory of human motivation was replaced by the drive theory of motivation.
The instinct theory, proposed by William James, suggested that behavior is driven by instincts. However, this theory was later replaced by the drive theory, which emphasizes the role of physiological needs and psychological drives in motivating behavior.
The drive theory states that deviations from homeostasis create physiological needs, which result in psychological drive states that direct behavior to meet the need and bring the system back to homeostasis. This theory highlights the importance of habits in shaping our behavioral responses to satisfy drives.