A striking observation made in the above plots relates to the differences in excited state character found between singlet and triplet states. It is tempting to think of singlet and triplet excited states as involving the same orbital transitions, only differing in their spin coupling. However, the above results show that this picture is oversimplified for realistic push-pull systems. Specifically, we find that low energy triplet states have enhanced local character whereas CT is enhanced for the singlets. This is reflected in all the bar graphs shown in the centre panels of Figs 8 to 10 with enhanced blue and orange bars for the triplets and more red/green for the triplets. The difference is even more apparent in terms of the exciton sizes (bottom panels of Figs 8 to 10) showing that the triplet states (red dots) are mostly below ≈ 6 Å whereas, except for nπ * states, the singlets (black dots) are well above this value.