Freud emphasized that unresolved childhood conflicts often lead to an external locus of control. reciprocal determinism. fixation. the self-reference phenomenon.

## Step 1<br />The question is asking about the concept that Sigmund Freud, the founder of psychoanalysis, emphasized. Freud proposed that unresolved childhood conflicts often lead to fixation.<br />## Step 2<br />Fixation, according to Freud, is a persistent focus on an earlier stage of development as a result of unresolved conflicts. This concept is a key part of Freud's psychosexual theory of development.<br />## Step 3<br />The other options provided, such as an external locus of control, reciprocal determinism, and the self-reference phenomenon, are not concepts that Freud emphasized in his theories.