Nice paper.

p. 558 (Study 4):

Participants also completed a ten item personality scale (Gosling, Rentfrow & Swann, 2003) [the TIPI; an alternative is Rammstedt and John's BFI-10] that indexes individual differences in the Big Five personality traits (extraversion, agreeableness, conscientiousness, emotional stability, and openness). These data will not be considered further.

It's strange not to say why the data will not be considered further. The data are available, the reduction is clean, but the keys look a bit too skeletal given that copies of the orignal surveys don't seem to be available (perhaps because Raven's APM and possibly some other scales are copyrighted). Still, it's great of the journal and the authors to provide the data. Anyway, I'll take a look.

The supplement contains the statements and the corresponding descriptive statistics for their profundity ratings. It's an entertaining read.

ETA: For additional doses of profundity, use Armok_GoB's profound LW wisdom generator.