Trait theory is better at describing than explaining personality. Discuss.

Trait theory describes personality as a hierarchy of distinguishing characteristics (traits) which underpin consistent desires, attitudes and behaviour and, when correlated, form broad, stable dispositional tendencies (factors/dimensions). Trait descriptions are good in terms of accessibility and generalisability because of their empirical derivation.  The lexicographical methodology for deriving personality descriptors (separating different concepts and reducing complexity through correlating linked concepts) reflects intuitive assessment of personality….(short extract)