Disclosed is a system, method, and device for detecting non-nutritive sucking events produced by an infant; patterns comprising such events (i.e., rhythmic sucking patterns, or RSPs); and relating said events and/or RSPs to an infant's response to a olfactory sensory input. The frequency and/or amplitude and/or other characteristics of non-nutritive sucking can change in response to such inputs. Accordingly, changes to RSPs offer detectable and measurable indicia of an infant's perception of these inputs. Furthermore, such information may be used to support and/or substantiate marketing communications to consumers; to guide selection and/or management of research-and-development projects; to help choose product designs that elicit RSPs identified as correlating with the well being of an infant; and other such uses.