Adults often fail to recognize the ambiguity of children's unelaborated responses to "Do you know/remember (DYK/R) if/whether" questions. Two studies examined whether sample questions and/or an explicit instruction would improve adults' ability to recognize referential ambiguity in children's testimony. In Study 1 (N = 383), participants…

How can we improve the instructional effectiveness of an online slideshow lesson? In the present study, college students received a 12-slide multimedia slideshow lesson on how a geographic information system works. In a 2 × 2 design, the lesson was presented one complete slide at a time (large segment) or added one section of the slide at a time…