Affirmations

What it is

Self-affirmation theory comes from Claude Steele's work in 1988. The idea is that people try to maintain an image of themselves as adequate and good, and that this image can be topped up from any domain they value. Writing about an important value does not address the threat directly and contains no statement about a desired outcome.

The self-help practice is different. It descends from the positive-thinking tradition, and its claim is that repeating a statement in the first person and present tense installs it.

In effect

Self-affirmation has measurable but small effects. A 2015 meta-analysis of 144 experimental tests in health behaviour found small effects on acceptance of health messages, intentions and behaviour. In education, a 2021 meta-analysis found small benefits for students facing identity threat and essentially none for others, which is what the theory predicts. Large-scale educational replications, though, came in smaller than the single-school originals, and some found nothing.

The self-help practice has a sharper finding against it. Joanne Wood and colleagues reported in 2009 that people with low self-esteem who repeated "I'm a lovable person" felt worse afterwards, while people with high self-esteem felt slightly better. The authors suggest that a statement far from a person's own view meets resistance and can make the gap more visible.

What it does not say

The evidence does not say that self-talk is useless. Research on distanced self-talk suggests that how people address themselves, by name or as "you", can matter as much as how positive the words are. Wood's study also has limits that its authors state: student samples, one phrase, and the exclusion of participants of East Asian descent, so the finding is about Western participants.

Nor does the self-affirmation research support repeating positive statements. The two practices share a word and little else, and the credibility of the first is often borrowed for the second.

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