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In the first definitive book on defence mechanisms, The Ego and the Mechanisms of Defence (1936), [7] Anna Freud enumerated the ten defence mechanisms that appear in the works of her father, Sigmund Freud: repression, regression, reaction formation, isolation, undoing, projection, introjection, turning against one's own person, reversal into the opposite, and sublimation or displacement.
With a purpose to apprehend how the ego uses defense mechanisms, it is important to apprehend the defense mechanisms themselves and the way they function. A few defense mechanisms are visible as protecting us from the internal impulses (e.g., repression); other defense mechanisms guard us from external threats (e.g., denial). [19]
Prickles on a blackberry branch. In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes), are hard, rigid extensions or modifications of leaves, roots, stems, or buds with sharp, stiff ends, and generally serve the same function: physically defending plants against herbivory.
For example, if feelings of hate towards another person make one anxious, the ego can facilitate the flow of love to conceal the hostility." [ 2 ] Where reaction-formation takes place, it is usually assumed that the original, rejected impulse does not vanish, but persists, unconscious, in its original infantile form. [ 1 ]
Many methods used for adjustment are also defense mechanisms. Defense mechanisms can be either adaptive or maladaptive depending on the context and the use. In a 2003 study, researchers found that elementary school children who utilized appropriate defense mechanisms had higher performance in academic, social, conduct, and athletic domains. [17]
Projective identification is a term introduced by Melanie Klein and then widely adopted in psychoanalytic psychotherapy.Projective identification may be used as a type of defense, a means of communicating, a primitive form of relationship, or a route to psychological change; [1] used for ridding the self of unwanted parts or for controlling the other's body and mind.
Narcissistic defenses are among the earliest defense mechanisms to emerge, and include denial, distortion, and projection. [4] Splitting is another defense mechanism prevalent among individuals with narcissistic personality disorder, borderline personality disorder, and antisocial personality disorder—seeing people and situations in black and white terms, either as all bad or all good.
Hypersensitive response (HR) is a mechanism used by plants to prevent the spread of infection by microbial pathogens.HR is characterized by the rapid death of cells in the local region surrounding an infection and it serves to restrict the growth and spread of pathogens to other parts of the plant.