Just as Austin began telling his therapist about a painful childhood experience, he complained of a headache and abruptly ended the session. A therapist using psychoanalysis would most likely suggest that Austin's behavior is an example of .

Psychological Resistance.

Explanation:

Psychological resistance is the phenomenon often encountered in clinical practice in which patients either directly or indirectly refuse to change thier behaviour due to constantly thinking about relevant experiences.

Resistance acts like a bridge wall that stands between individuals and the actualizing themselves.

Resistivity to change has affective, cognitive, and behavioral components which create psychological resistance to changing in one's life about a particular situation. The development of unwillingness to change begins early in childhood and may be neurotically physiologically founded, Influencing a person's general health.