The threshold effect refers to the phenomenon of putting forward a small request before putting forward a larger request, so as to increase the possibility of others accepting a larger request.
According to the above definition, which of the followings belongs to the threshold effect?
A brand of notebook computer has a low market share due to its low cost performance. Therefore, the manufacturer has formulated a promotion plan. When buying this notebook computer, it will give away a mouse, MP3 and USB flash disk. As a result, the sales volume of this notebook computer has increased significantly.