Complex sentence: Being in a positive mood causes a person to process information in a holistic, all-inclusive fashion while being in a negative mood encourages more adaptive processing which accounts for each detail individually (Bless & Fiedler, 2006).
Split into simpler sentences: Being in a positive mood causes a person to process information in a holistic, all-inclusive fashion. On the other hand, being in a negative mood encourages more adaptive processing which accounts for each detail individually (Bless & Fiedler, 2006).