A measure of the probability that people will purchase a product during a specific time period. Typically, they are based on self-reports. Purchase probabilities are more encompassing than <a href="search.pl?p=purchase intentions">purchase intentions</a> because they also include expectations of unplanned purchases and recognize that your intentions may change over the <a href="search.pl?p=forecast horizon">forecast horizon</a>. See Morwitz (2001).<o:p></o:p></P>
 <ul>
   <li>Morwitz, V. G. (2001), “Methods for forecasting from 
intentions data,” in J. S. Armstrong (ed.), <I>Principles of Forecasting</I>. 
Norwell, MA: Kluwer Academic Press.</li>
 </ul>