yes...it's pretty easy; just prefil an equation type question with one of the following "keyword":
{TOKEN:FIRSTNAME} inserts the value from the "firstname" field in the tokens table
{TOKEN:LASTNAME} inserts the value from the "lastname" field in the tokens table
{TOKEN:EMAIL} inserts the value from the "email" field in the tokens table
{TOKEN:ATTRIBUTE_1} inserts the value from the "attribute_1" field in the tokens table
{TOKEN:ATTRIBUTE_2} inserts the value from the "attribute_2" field in the tokens table
etc...