Electra complex classical psychoanalytic theory, the child's identification with the same-sex parent is the successful resolution of the Electra complex and of the Oedipus complex; his and her key psychological experience to developing a mature sexual role and identity. Sigmund Freud instead proposed that girls and boys resolved their complexes differently—she via penis envy, he via castration anxiety; and that unsuccessful resolutions might lead to neurosis. Hence, women and men who are fixated in the Electra and Oedipal stages of their psychosexual development might be considered "father-fixated" and "mother-fixated". As a psychoanalytic term for daughter–mother psychosexual conflict, the Electra complex derives from
Oedipus complex involved an acute awareness of a complicated triangle involving mother, father, and child" and that "both positive and negative Oedipal themes are typically observable in development". Despite evidence of parent–child conflict, the evolutionary psychologists Martin Daly and Margo Wilson note that it is not for sexual possession of the opposite sex-parent; thus, in "Homicide" (1988), they proposed that the Oedipus complex yields few testable predictions, because they found no evidence of the Oedipus complex in people. In "No More Silly Love Songs: A Realist's Guide to Romance" (2010), Anouchka Grose says that "a large number of people, these days believe