Norms for Familiarity, Concreteness, Valence, Arousal, Wordlikeness, and Recall Accuracy for Swahili–Portuguese Word Pairs

Normative studies are common in cognitive psychology because they allow us to estimate with more precision the attributes of the stimuli used in empirical studies. The studies reported here had four aims. The first three aims were to obtain estimates for (a) familiarity, concreteness, valence, and arousal for a single set of words in Brazilian Portuguese; (b) wordlikeness (similarity to Portuguese) of a set of foreign words (Swahili); and (c) recall accuracy of Swahili–Portuguese word pairs in a multitrial learning task. The fourth aim was to investigate if any of the assessed measures predicts recall accuracy. One-hundred twenty-eight participants took part in one of the three studies. In Studies 1a and 1b, participants judged 80 Portuguese words for familiarity, concreteness, valence, and arousal and 80 corresponding Swahili words for wordlikeness; in Study 2, participants carried out three study–test cycles of a set of Swahili–Portuguese word pairs. Overall, word-attribute estimates were reliable (rs = .94–.98) and participants’ responses had high internal consistency (Cronbach’s α = .84–.98). Moreover, the relative difficulty of word pairs was retained across trials (rs = .65–.88). Although different variables correlated with recall accuracy at different time points, multiple regressions indicate that none of the word-attribute variables predicted recall accuracy across trials. These norms may prove fruitful not only for Brazilian human memory researchers but also for international research teams, as it will enable the development of more controlled cross-cultural studies in this field.