Complex sentence: It was established in 1975 as an independent section of the "Journal of Experimental Psychology" and covers research in experimental psychology, more specifically, "empirical investigations in experimental psychology that bridge practically oriented problems and psychological theory".
Split into simpler sentences: It was established in 1975 as an independent section of the "Journal of Experimental Psychology" and covers research in experimental psychology. More specifically, the journal includes "empirical investigations in experimental psychology that bridge practically oriented problems and psychological theory".