Are You the Author or the Actor of Your Life?
In 1966, Ohio State psychologist Julian B. Rotter (1916–2014) published an 80-page monograph in Psychological Monographs: Generalized expectancies for internal versus external control of reinforcement. It introduced a 'generalized expectancy' measuring whether a person attributes outcomes to their own effort and ability (Internal LOC) or to luck, fate, and powerful others (External LOC).
Within his social learning theory, Rotter defined LOC not as a fixed trait but as a learned expectancy system. Why do people behave differently betting on coin flips vs exams? Because they expect different degrees of control.
His I-E Scale (23 forced-choice items) asked, e.g., 'a) People can shape their lives as they wish vs b) Much of life depends on chance events.' The simple tool became one of personality psychology's most cited measures, appearing in over 17,000 papers in 60 years.
Levenson's Crack: External LOC Isn't One Thing
In 1973, Hanna Levenson delivered a decisive critique: 'leaving life to chance' and 'powerful others decide' are wholly different externalities that Rotter conflated. Her IPC Scale (Internality, Powerful others, Chance) measured all three independently across 24 items.
Empirical results were clear. Chronically ill patients scored low on Chance but high on Powerful Others (doctors) — not pathology but realistic perception. Civil rights activists scored high on both Internal AND Powerful Others — believing in their action while recognizing system power. The simple 'external = passive' equation broke.
Health LOC — Wallston's Clinical Application
In 1978, Kenneth & Barbara Wallston and DeVellis developed the Multidimensional Health Locus of Control (MHLC) specialized for medicine. Three subscales: Internal HLC, Chance HLC, Powerful Others HLC.
Wallston's 2005 30-year review reported that high internal HLC predicts active prevention (exercise, smoking cessation) and medication adherence. But 'always internal' isn't good — pressing a terminal cancer patient to feel 'it's all your responsibility' only generates guilt. Wallston later revised theory to integrate self-efficacy (Bandura) with LOC.
Generational Shift: Twenge's Striking Meta-analysis
In 2004, Jean Twenge, Liqing Zhang, and Charles Im published in Personality and Social Psychology Review a meta-analysis (97 samples, 18,310 people) tracking US college and child LOC scores from 1960 to 2002. External LOC rose by 0.8 standard deviations. The average 2002 student's externality matched the top 20% of 1960.
Twenge offered two interpretations. Pessimistic: generational spread of learned helplessness. Balanced: accurate reflection of structural reality — housing, tuition, labor markets are objectively less under individual control than in 1960. The 'effort works' message held more truth in 1960 than in 2020. Diagnosing externality rise as pure pathology is dangerous.
Three LOC Dimensions: Definition, Example, Context
| Dimension | Definition | Example | Adaptive context | Maladaptive context |
|---|---|---|---|---|
| Internal | Outcomes depend on my behavior/ability | 'If I prepare, I'll pass the interview' | Academic, work, health behavior | Self-blame for uncontrollable events → depression, guilt |
| External — Chance (Levenson) | Outcomes depend on luck/randomness | 'Some are just born lucky' | Truly random domains (lottery, disasters) | Giving up in changeable domains → passivity |
| External — Powerful Others (Levenson) | Outcomes depend on authorities/experts | 'I follow doctor's orders' | Medical adherence, teamwork, allyship | Delegating all decisions → loss of autonomy, abuse vulnerability |
Critique: The Danger of 'Internal = Always Good'
Three major criticisms of LOC research:
(1) Causal direction. Do internals succeed, or do successes become internal? Longitudinal studies (Lefcourt 1982) suggest both flow.
(2) Socioeconomic confound. The middle class has objectively more control. 'Internal LOC causes success' is overstated without controlling for SES, education, opportunity.
(3) System-justification risk. Linked to Seligman's learned helplessness (#261), but diagnosing externality from abuse, discrimination, or structural poverty as 'pathology' blames victims twice. The trap of reducing structural problems to individual mindset under positive-psychology branding.
Distinguishing from Self-Efficacy and Attributional Style
LOC is often confused with adjacent concepts. Bandura's self-efficacy (#271) is a 'task-specific ability belief' (situational): 'I can do an English interview well.' LOC is a generalized expectancy: 'My life is my responsibility.'
Abramson, Seligman, & Teasdale (1978) attributional style decomposes a single event's cause along three dimensions: ① internal/external ② stable/unstable ③ global/specific. Depressive style attributes failure as 'internal, stable, global' ('I'm incompetent, forever, in every domain'). LOC addresses only the first dimension.
Korean Context: Does Jeong, Fate, Internal LOC Clash?
In Korea, LOC research blossomed after Lee Hoon-koo's 1981 Korean I-E adaptation (Korean Journal of Psychology). An Chang-kyu (1996) standardized the Korean IPC (IPC-K). Kim Hye-won (2010) on adolescent academic LOC, Lee Eun-joo (2012) on elder health LOC followed.
Many studies report Koreans score higher on External LOC, especially Powerful Others, than Westerners. But reading this as 'Koreans are passive' is wrong. As Cheng et al. 2013 meta-analysis (152 studies, 31 countries) shows, in collectivist cultures, 'following family/community decisions' is adaptive external dependence with different effect-size patterns.
Korean concepts of jeong, unmyeong (fate), and palja (destiny) differ from clinical external LOC. Saying 'it's my palja' often coexists with concrete effort at the action level — a dual structure Western scales miss. Korean clinical use of LOC must distinguish cultural external expectation from clinical helplessness.
What to Take Away
First, knowing your LOC pattern is worthwhile — check whether you're deferring to 'fate' in domains where action would matter. Second, pulling uncontrollable domains (others' minds, disasters, aging, structural inequality) into 'my responsibility' deepens depression. The Niebuhr Serenity Prayer is the clinical core of LOC — wisdom to distinguish the changeable from the unchangeable.
Third, resist the simplification that 'external LOC is illness.' Under discrimination, poverty, chronic illness, or collectivist culture, external perception can be an accurate map of reality. LOC is not a diagnosis — it's a mirror for self-understanding.
