Emptiness: black 37%, grey 21%, white 21%, ... Heller (1989)
air-Q
‘Airy’ and colour in Germany
Airy: white 37%, yellow 18%, pink 17%, .... Heller (1989)
‘Depth’ and colour in Germany
Depth: blue 54%, grey 13%, white 10%, ... Heller E. (1989)
‘Cold /coolness’ and colour in Germany
Cold: blue 47%, white 23%, grey 14%, ... The coolness: blue 46%, silver 14%, white 13%, ... Heller E. (1989)