The Domains of Perfectionism Scale (DP; Rhéaume et al., 1995) assesses the extent in which the respondent is perfectionist across 22 life domains, using a five-point Likert scale.

1. 1. To analyze the psychometric properties and factorial structure of the Portuguese version of the DP scale;

2. 2. To investigate which domains are more prevalent and whether the DP mean scores are affected by gender.

The Portuguese version of DP scale was administered to a sample of 217 university students (Mean age = 18.50 ± 2.345). To study the temporal stability, 31 respondents answered the scale again after six weeks. Response options were collapsed into 0 and 1, in order to compute the variable “Number of domains” (NrD).

The DP Cronbach's alpha coefficient was .85. The test-retest correlation coefficient for the total score was. 98 (p < .001). The factorial analysis resulted in a four factors structure explaining 50.14% of variance: F1 Relationships and Appearance, F2 Studies and Work, F3 Health and Leisure and F4 Order and Domestic Affairs. The most frequent individual domains were Bodily hygiene, Romantic relationships, Work, Social relationships and Studies (>80%). DP total mean score did not significantly differ between genders (Males 66.62 ± 10.446 vs. Females 67.83 ± 7.734, p = .525), nor the NrD (15.76 ± 2.220 vs. 15.52 ± 4.236, p = .752). The individual domains Studies, Orthography, Presentation of documents and Domestic chores and F2 were significantly higher in females; Sports and F3 were significantly higher in males.

The Portuguese version of the DP scale presented good reliability and construct validity.