They could move or leave their finger on the surface of the specimens, but most did not make static contact, which may have caused difficulty perceiving the temperature. In addition, participants were not allowed to lift the specimens, which may have caused difficulty perceiving weight. Therefore, in order to isolate differences in processing levels of each perceptual adjective, stimuli that ensure ease of identification of different qualities should be employed, adjectives must be worded unambiguously, and participants may need to be able to manipulate objects in future experiments.