Pleasant events are remembered better than unpleasant ones. This statement is known as 'the Polyanna principle'. The presented research was to verify it in regard to real events and dreams. 10 participants kept especially designed diaries to record their dreams and real events. After 3 weeks they tried to remember all details they had mentioned previously. Obtained results didn't support 'the Polyanna principle'. A reverse tendency was observed: unpleasant dreams and real events were remembered slightly better than pleasant ones. Fading affect bias was apparent: contrary to previous research positive affect was fading more than negative one. This effect was stronger for dreams than for real events, but generally related to the memory of recorded details, with high and relatively stable affect accompanying good memory and faded affect matching poor memory of events and dreams
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.