Explain why economists differentiate between a “change in demand" and a “change in quantity demanded." Why don't they use these phrase
interchangeably?

This is a question for economics

Jane is a new therapist who works with couples and families. her decision was motivated by her sister melinda’s experience of spousal abuse. when jane meets with her supervisor to review cases, he points out that jane takes sides with her female clients when they cry or describe intense conflicts with their husbands. she believes her supervisor is blind to the signs of abuse. what critical thinking pitfall do jane’s reactions show?