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Note that we used the same firm-level growth rates as were originally reported, along contemporaneous mean ACSI scores.
We examine the ISP data a bit less critically due to the fact that the matching sample size was excessively low.
As mentioned earlier, these respondents are members of a proprietary US panel that is maintained and accessed by a leading market research firm. The respondents were filtered based on their recent consumer activity (nonactives were removed); they were also filtered for user status of the firms under investigation. Incentives are provided to panel members for continued participation in the panel.
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