Disclosed embodiments enable improved perception of a user's response and/or preferences. Search results responsive to a query are presented to the user. Parameters associated with an implicit user response are tracked. The implicit response may consist of a delay from the presentation of the user response; a speed of, a volume of, a tone of, or a word used in a user response; a speed, a direction, and/or a consistency of a pointer movement; a location of a touch; a change in a touch; and/or a user movement captured by a camera. Measurements and other information derived from the tracked parameters may be stored in a user profile, which may later be used to calculate a personalized implicit response. An implicit response may be calculated from the parameters. The implicit response may be used to qualify an explicit response, which may be the impetus to modify search results.