Conceptual combination is proposed as the mental activity by which imagination produces new ideas in creative processes. Two parallel forms of the imagination test were constructed based on conceptual combination theory. Each test comprises eighteen unrelated noun-noun pairs. For each pair, an original idea is required. The test-retest reliability…

Arthur Cropley's academic career began in the early 1960s and, more than 50 years later, shows few signs of abating. Over this lengthy period, he has made important contributions not only to creativity research, but to a range of related areas of psychology. Arthur Cropley has also been an influential figure in the careers of several generations…