Fig. 4.
The 40-odor University of Pennsylvania Smell Identification Test (UPSIT).53 This test is comprised of four booklets, each containing 10 microencapsulated (“scratch and sniff”) odors which are released by a pencil tip. The examinee is required to provide an answer on each test item (see columns on last page of each booklet) even if no odor is perceived or the perceived odor does not smell like one of the response alternatives (i.e., the test is forced-choice). Photograph courtesy of Sensonics International, Haddon Heights, New Jersey USA. Copyright ©2017, Sensonics International.