Complexes, like the sentiments and dispositions, are psycho logical constellations formed by the attachment of the instinctive emotions to objects or experiences presented by the environment, but which, owing to their painful or repug nant character, are unacceptable to the ‘self5. Experiences associated with painful emotions, such as an act of cowardice, sexual assaults, wounded pride, frequently become the material for a complex. The thought of the war may be the nucleus of a sentiment to a man who was heavily decorated, a complex to a man court-martialled for cowardice. What at one age may be a mother sentiment, may at a later age be a mother complex. The complex is commonly named according to the dominant emotion contained in it, like a fear complex, sex complex, inferiority complex, or, at other times, by the name of the nucleus round which the emotions are grouped - a mother complex, or war complex, or religious complex.