Complex sentence: Although the effects were smaller in the third experiment, participants in the "Positive toward condition" were still faster, which shows that overall people are faster at the "Positive toward condition," regardless of the valence of the central word.
Split into simpler sentences: Although the effects were smaller in the third experiment, participants in the "positive toward condition" were still faster. Overall, these results show that people are faster at the "positive toward condition," regardless of the valence of the central word.