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A meta-analysis was carried out to investigate the relationship between connectedness with nature, environmental identity, and environmental self-identity. Through meta-analyzing these relationships, we are able to assess the true estimate of their magnitude. The results revealed a strong correlation between measures of connectedness with nature and environmental identity (r = .75 [0.67, 0.83], k = 11) as well as environmental self-identity (r = .57 [.31, .84], k = 5). Further moderation analysis indicated that the relationship between connectedness with nature and environmental identity is different for graphical and questionnaire instruments used for assessing connectedness with nature; the aggregated correlation for graphical instruments (r = .62 [.56, .67], k = 9) was significantly lower than for questionnaires (r = .82 [.74, .91], k = 9). We suggest revisiting the various instruments assessing human–nature relatedness …