AUTHOR=Schoppek Wolfgang, Fischer Andreas TITLE=Complex problem solving—single ability or complex phenomenon? JOURNAL=Frontiers in Psychology VOLUME=6 YEAR=2015 URL=https://www.frontiersin.org/articles/10.3389/fpsyg.2015.01669 DOI=10.3389/fpsyg.2015.01669 ISSN=1664-1078