**Question:** The term 'free association' is coined by -

A. Sigmund Freud
B. Carl Gustav Jung
C. Wilhelm Wundt
D. Max Wertheimer

**Core Concept:**
Free association is a therapeutic technique in psychoanalysis, which involves the spontaneous flow of a patient's thoughts without censorship or restraint. This technique helps the therapist understand a patient's unconscious thoughts and emotions.

**Why the Correct Answer is Right:**
The correct answer, A. Sigmund Freud, is the founder of psychoanalysis and the father of modern psychotherapy. Free association is a fundamental principle in psychoanalysis, allowing the therapist to explore a patient's unconscious thoughts and emotions.

**Why Each Wrong Option is Incorrect:**

A. Sigmund Freud - Although he developed psychoanalysis, he did not coin the term 'free association'.
B. Carl Gustav Jung - Although a key figure in psychoanalysis, he did not coin the term either.
C. Wilhelm Wundt - He is known for the development of the first psychology laboratory and behaviorism, not psychoanalysis or free association.
D. Max Wertheimer - He is known for his role in the development of Gestalt psychology, not psychoanalysis or free association.

**Clinical Pearl / High-Yield Fact:**

In the realm of psychoanalysis, understanding the concept of free association is essential for medical students, psychiatrists, and psychologists to grasp the therapeutic approach and principles of psychoanalysis. This knowledge can aid in recognizing and treating mental health disorders, and appreciating the interplay between unconscious thoughts, emotions, and behaviors.

**Correct Answer:**
A. Sigmund Freud

**Explanation:** The term 'free association' was coined by Sigmund Freud, the founder of psychoanalysis and a pioneer in the field of mental health. The concept of free association allows the exploration of a patient's unconscious thoughts, emotions, and repressed memories, which are essential for understanding mental health disorders and their treatment.