MENTAL MECHANISMS

Psychoanalytic theory proposes that during development defence strategies are used to mediate between unconscious instinctual drives and the structures of outside reality.

The repertoire of defences which an individual possesses dictates his character traits.

Defences occur as part of normal development and everyday life:

they are not in themselves pathological unless they become excessive or fail to maintain adequate functioning of the individual. Defences may be classified according to the libidinal phase at which they arise, or according to the psychopathology with which they are associated, or whether they are basic or composite.

Repression

Given a central position by Freud. Leads to inabilityto remember unpleasant wishes or impulses. Common in hysterical, dissociative behaviour but may occur as part of other defences, e.g. sublimation.
 

Displacement

Shifting of emotion from one idea or object to another in a way that causes less anxiety and guilt.
 

Reaction formation

An unacceptable impulse is transformed into its opposite. Common in obsessive compulsive neurosis.
 

Isolation

Separation of an idea from the affect which accompanies it.
 
Undoing

Attempts to cancel out a previously committed act by counter actions. Characteristic of obsessive compulsive states with

expiatory rituals which attempt to undo some forbidden act or cancel the effects of a wish to which has been attributed imaginary power of action.  

Rationalisation

This provides alternative explanation for instinctual motives and drives.
 
 

Intellectualisation

Excessive use of intellectual processes to avoid affective experience.
 
 

Denial

May refer to the affect associated with an idea or event or may include the whole episode. Exclusion from conscious memory.
 

Projection

One's own feelings and wishes are attributed to another person.  Common in normals and fundamental in paranoid psychosis.
 

Regression

A return to an earlier state of psychological development in order to avoid tension and conflict of the present. Common in normals under stress as well as in pathological states.

Counterphobic mechanisms

Attempt to alleviate phobic anxieties by excessive activity in specific relation to the area of concern.
 
Withdrawal and avoidance

Removal of the self from conflict situ. This may lead to a failure to resolve them.

Introjection

Qualities of a loved oblect are iand the distinction between it and the self tends to be mini mised or obliterated. This attempts to reduce painful awareness of separateness and loss.
 
Identification

Usually with a loved oblect: may also be dictated by guilt
 
Acting out

The living out (in action) of warded-off memories when the links between the action and the memory are obscure to the patient.
 

Sublimation

Psychic energy is deflected to another goal which is more acceptable to the individual concerned.