Abstract: An electronic method for generating group data indicative of the collective response of at least a subset of respondents to at least one portion of a time-varying stimulus the method comprising: receiving responses to the time-varying stimulus from respective ones of a plurality of respondent devices, each response including data indicative of a response of a respondent associated with the respective respondent device to the time-varying stimulus; filtering the responses to generate a filtered response data set that excludes responses outside of a timing tolerance relative to a portion of the time-varying stimulus to which the group data is intended to relate; and processing at least a subset of the filtered response data set to generate the group data.

Abstract: An electronic method for generating group data indicative of the collective response of at least a subset of respondents to at least one portion of a time-varying stimulus the method comprising: receiving responses to the time-varying stimulus from respective ones of a plurality of respondent devices, each response including data indicative of a response of a respondent associated with the respective respondent device to the time-varying stimulus; filtering the responses to generate a filtered response data set that excludes responses outside of a timing tolerance relative to a portion of the time-varying stimulus to which the group data is intended to relate; and processing at least a subset of the filtered response data set to generate the group data.

Abstract: An electronic method for generating group data indicative of the collective response of at least a subset of respondents to at least one portion of a time-varying stimulus the method comprising: receiving responses to the time-varying stimulus from respective ones of a plurality of respondent devices, each response including data indicative of a response of a respondent associated with the respective respondent device to the time-varying stimulus; filtering the responses to generate a filtered response data set that excludes responses outside of a timing tolerance relative to a portion of the time-varying stimulus to which the group data is intended to relate; and processing at least a subset of the filtered response data set to generate the group data.

Abstract: An electronic method maps web impressions to an estimate of a unique audience. The method includes monitoring web impressions made with respect to one or more websites to identify user devices used to make the web impressions, comparing identified user devices to a database in which user devices are linked to household data to produce a first subset of web impressions to which household data is matched, and a second subset of web impressions having no matched household data, processing the first subset of impressions using an audience model of visits per household (VHH) to websites to obtain a partial estimate of the unique audience, and adjusting the partial estimate of the unique audience to take into account the second subset of impressions in order to derive a final estimate of the unique audience.

Abstract: A device for measuring or detecting UV radiation that is usable with sunscreen, the device including: (a) a colorant layer having at least one photochromic material that is capable of changing its color when exposed to UV radiation, and (b) an over-layer atop the colorant layer having (i) a bottom surface that is in contact with a top surface of the colorant layer and (ii) an opposing top surface, the over-layer having a material that is constructed and arranged to allow at least a portion of the sunscreen, when deposited on the top surface of the over-layer, to be absorbed by the over-layer while preventing the sunscreen so deposited from penetrating through the over-layer to the colorant layer, the over-layer being transparent to allow UV radiation to pass through the over-layer to the colorant layer at least when the surface of the over-layer is not covered with the sunscreen. Also, methods for preparing and using the device.

Abstract: An electronic method for generating group data indicative of the collective response of at least a subset of respondents to at least one portion of a time-varying stimulus the method comprising: receiving responses to the time-varying stimulus from respective ones of a plurality of respondent devices, each response including data indicative of a response of a respondent associated with the respective respondent device to the time-varying stimulus; filtering the responses to generate a filtered response data set that excludes responses outside of a timing tolerance relative to a portion of the time-varying stimulus to which the group data is intended to relate; and processing at least a subset of the filtered response data set to generate the group data.

Abstract: An electronic method for generating group data indicative of the collective response of at least a subset of respondents to at least one portion of a time-varying stimulus the method comprising: receiving responses to the time-varying stimulus from respective ones of a plurality of respondent devices, each response including data indicative of a response of a respondent associated with the respective respondent device to the time-varying stimulus; filtering the responses to generate a filtered response data set that excludes responses outside of a timing tolerance relative to a portion of the time-varying stimulus to which the group data is intended to relate; and processing at least a subset of the filtered response data set to generate the group data.

Abstract: An electronic method for generating group data indicative of the collective response of at least a subset of respondents to at least one portion of a time-varying stimulus the method comprising: receiving responses to the time-varying stimulus from respective ones of a plurality of respondent devices, each response including data indicative of a response of a respondent associated with the respective respondent device to the time-varying stimulus; filtering the responses to generate a filtered response data set that excludes responses outside of a timing tolerance relative to a portion of the time-varying stimulus to which the group data is intended to relate; and processing at least a subset of the filtered response data set to generate the group data.