According to Sigmund Freud's Psychosexual Development Theory, when a child is passing through the 'Anal Stage', if parents exercise extreme strictness or excessive leniency during toilet training, which specific character traits are most likely to develop in the child's personality, and what is the underlying psychological reason?

Understanding Freud's Anal Stage

According to Sigmund Freud's theory of psychosexual development, the second stage is the Anal Stage (roughly 1.5 to 3 years of age), where the child's focus of pleasure is centered on eliminative functions.

• Anal-Retentive Personality: If parents are excessively strict and punitive during toilet training, the child develops an anal-retentive character. This manifests as extreme stubborness, stinginess, meticulousness, and a compulsive need for order and cleanliness.
• Anal-Expulsive Personality: Conversely, if parents are extremely lenient, the child develops an anal-expulsive personality, leading to messy, careless, and disorganized behavioral traits later in life.

For further academic reference on psychoanalytic theory, you can explore detailed resources such as the Sigmund Freud Overview.