88 Derek P. Bergeron et al. which represents two poles: extraversion/introversion(E/I), sensation/intuition S/N), thinking/feeling(T/F), and judgement/perception /P). Scores reveal a tendency towards one of the two poles; if one is below the mean on their score, they tend towards the first of the two poles(extraversion for E/l, sensa tion for S/N, thinking for T/F, and judgement for J/P); if they are above the mean, they tend towards the second pole (introversion for E/l, intuition for S/N, feeling for T/F, and perception for J/P Several psychometric studies of the PPSDQ scores have been reported. Con- uct validity has been demonstrated with confirmatory factor analysis Thompson Melancon 1995, I996) Convergent validity has been demon- strated through strong correlations between PpsDQ and MBTI scores hampson Stone I994)as well as predicted correlations between PPSDQ scores and constructs from the five-factor model of personality(Arnau Thompson Rosen 1999). Internal consistency has been demonstrated, with alpha coefficients ranging from. 8 3 to 9o (Arnau etal. I999). Temporal stabil ity of PpsDQ scores has also been demonstrated, with re-test coefficients rang ng from. 79 to. 88 over a two-week re-test period (Thompson Arnau I998 Self-Assessment Manikin. The Self-Assessment Manikin (SAM; Bradley ang I994)was administered to assess participants'emotional responses to he picture they drew. The SAM is a self-report instrument that measures one's emotional response to a given stimulus on two dimensions: valence and arousal. Valence refers to whether the stimulus is pleasant or unpleasant. Arousal refers to whether it is exciting or calming. The SAM consists of two sets of five cartoon pictographs depicting different levels of affective valence and arousal. For each dimension, participants were instructed to place an'X on or between the figures that best described their emotional response to the picture they drew. Thus, valence and arousal are effectively rated on a nine point Likert scale. Procedure. Before subjects arrived for the study, one of the proctors placed a blank sheet of paper, a box of crayons, and a pencil on the desks in the room designated for the study. Once all the subjects had arrived, they were given an instructions sheet, which the proctor also read over verbally Participants were first instructed to fill out the PPSDQ. Next, they were instructed to do one of two different tasks, depending on the study to which they were assigned. Roughly half of the participants were assigned to do the space Domain Test, and the other half were assigned to do the Colour Associative Test. pace Domain Test. Participants taking the space domain task were asked to make four drawings on one sheet of paper regarding each of the following four subjects: remembrances of mother, remembrances of father, things that88 Derek P. Bergeron et al. which represents two poles: extraversion/introversion (E/I), sensation/intuition (S/N), thinking/feeling (T/F), and judgement/perception (J/P). Scores reveal a tendency towards one of the two poles; if one is below the mean on their score, they tend towards the first of the two poles (extraversion for E/I, sensa￾tion for S/N, thinking for T/F, and judgement for J/P); if they are above the mean, they tend towards the second pole (introversion for E/I, intuition for S/N, feeling for T/F, and perception for J/P). Several psychometric studies of the PPSDQ scores have been reported. Con￾struct validity has been demonstrated with confirmatory factor analysis (Thompson & Melancon 1995, 1996). Convergent validity has been demon￾strated through strong correlations between PPSDQ and MBTI scores (Thompson & Stone 1994) as well as predicted correlations between PPSDQ scores and constructs from the five-factor model of personality (Arnau, Thompson & Rosen 1999). Internal consistency has been demonstrated, with alpha coefficients ranging from .83 to .90 (Arnau etal. 1999). Temporal stabil￾ity of PPSDQ scores has also been demonstrated, with re-test coefficients rang￾ing from .79 to .88 over a two-week re-test period (Thompson & Arnau 1998). Self-Assessment Manikin. The Self-Assessment Manikin (SAM; Bradley & Lang 1994) was administered to assess participants’ emotional responses to the picture they drew. The SAM is a self-report instrument that measures one’s emotional response to a given stimulus on two dimensions: valence and arousal. Valence refers to whether the stimulus is pleasant or unpleasant. Arousal refers to whether it is exciting or calming. The SAM consists of two sets of five cartoon pictographs depicting different levels of affective valence and arousal. For each dimension, participants were instructed to place an ‘X’ on or between the figures that best described their emotional response to the picture they drew. Thus, valence and arousal are effectively rated on a nine￾point Likert scale. Procedure. Before subjects arrived for the study, one of the proctors placed a blank sheet of paper, a box of crayons, and a pencil on the desks in the room designated for the study. Once all the subjects had arrived, they were given an instructions sheet, which the proctor also read over verbally. Participants were first instructed to fill out the PPSDQ. Next, they were instructed to do one of two different tasks, depending on the study to which they were assigned. Roughly half of the participants were assigned to do the Space Domain Test, and the other half were assigned to do the Colour Associative Test. Space Domain Test. Participants taking the space domain task were asked to make four drawings on one sheet of paper regarding each of the following four subjects: remembrances of mother, remembrances of father, things that