One by one, the individual patients opened the packs after their
medical consultations. Type A packages measured 240 200 mm
with a depth of between 8 mm and 25 mm. Type B measured
230 200 mm and the depth varied between 8 mm and 40 mm.
Before the test started, patients were informed that they should
open the two meat packages in the usual way, although they would
not be allowed to use assistive devices. Patients were not told that
differences were. The order in which patients opened the packswas
determined by a randomized sequence. At this stage, the words
easy to open were not printed on the Type B packaging (Fig. 2), so
patients were unable to distinguish the two packages from the
presence of this logo. The same person conducted all the tests.