Fenichel was a prolific writer on psychoanalysis, and published some forty articles between "Introjektion und Kastrationkomplex" (1925) and "Neurotic Acting Out" (1945). Among some of the areas he contributed to were female sexuality, the feeling of
triumph, and the antecedents of the
Oedipus complex. He also published an influential technical manual,
Problems of Psychoanalytic Technique (1939). Three interwar papers on female sexuality, attracted Freud's own attention: he wrote of the first that
"Fenichel (1930) rightly emphasizes the difficulty of recognizing in the material produced in analysis what parts of it represent the unchanged content of the pre-Oedipus phase and what parts have been distorted by regression". His 1936 article on the symbolic equation of Girl and Phallus subsequently became a launch pad for
Jacques Lacan. In his 1939 article "Trophy and Triumph", Fenichel pointed out that the feeling of triumph "results from the removal of anxiety and inhibition by the winning of a trophy", but added that as
"the trophy is a super-ego derivative since it is a symbol of parental authority [...] it threatens the ego in the same way that the super-ego threatens the ego". Building on his own work, and the contributions of his peers and predecessors, Fenichel produced his encyclopedic textbook of 1945:
"For countless students and professionals Fenichel is synonymous with his Psychoanalytic Theory of Neurosis
; and this text is regarded as synonymous with reliable and comprehensive psychoanalytic knowledge." Nevertheless, the work was not uncontroversial, challenging among others the findings of
Melanie Klein, the
neo-Freudians and much of the work of
Franz Alexander, as well as displaying Fenichel's continuing Marxist affiliation. ==Criticism==