Temperament and Borderline Personality Disorder

Temperament and Borderline Personality Disorder BPD Print Temperament and Borderline Personality Disorder By Erin Johnston, LCSW Erin Johnston, LCSW is a therapist, counselor, coach, and mediator with a private practice in Chicago, Illinois. Learn about our editorial policy Erin Johnston, LCSW Updated on May 21, 2019 Getty Images/Eric Audras/ONOKY More in BPD Diagnosis Treatment Living With BPD Related Conditions Temperament can be an important factor in the development of borderline personality disorder (BPD). The exact causes of BPD are not known; it is most often thought to be a combination of genetic (nature) and environmental (nurture) factors. Individual temperaments can predispose a person to develop BPD. What Is Temperament? Temperament refers to our inborn personality traits, which are genetic in nature. The different ways infants interact with and react to their environment and experiences are reflective of their temperament, or behavioral style. Efforts to understand individual differences in personality have occurred throughout history. Despite this, there is no clear consensus as to what the specific temperament traits are called or how they should be categorized. However, there have been some efforts to comprehensively describe temperament; one is the New York Longitudinal Study (NYLS). New York Longitudinal Study (NYLS) In 1956, physicians Alexander Thomas and Stella Chess began The New York Longitudinal Study. Involving 185 children over six years, the authors identified nine distinct temperament traits present in every individual at birth. These traits as defined can be helpful in better understanding of how personality is impacted by genetic factors (or nature). According to Thomas and Chess, these traits are areas of behavioral styles found in every individual. Each temperament listed should be seen as having a range or being a spectrum; some infants are going to be very distractible, others less distractible, and others even less. In the end, there are endless combinations of temperaments, making each infant unique at birth. Nine Temperament Traits From The Origin of Personality: AdaptabilityThe ease with which a child adapts to changes in his environmentActivity LevelThe proportion of active periods to inactive onesApproach/WithdrawalThe response to a new object or personDistractibilityThe degree to which extraneous stimuli affect behaviorIntensity of ReactionThe energy of response regardless of its quality or directionQuality of MoodThe amount of friendly, pleasant, joyful behavior as contrasted with unpleasant, unfriendly behaviorPersistence/Attention SpanThe amount of time devoted to an activity and the effect of distraction on the activityRegularity/RhythmicityThe regularity of hunger, excretion, sleep, and wakefulnessSensory ThresholdThe intensity of stimuli required to evoke a discernible response Temperament Throughout Development In general, temperaments exist as they are prior to birth and are a component of an individual’s personality. Although it is thought that temperaments are genetically determined, personalities as a whole are a combination of temperaments and experiences that shape and influence a person’s development.