To avoid wrong decisions, people in preparation often look for as much reliable information as possible. This sometimes results in cognitive overload due to complex information, which can lead to adverse effects such as decision paralysis or serious misjudgements. But in some cases confusion can also have positive consequences for decisions as it increases attention and cognitive effort. A visible signal for confusion is the lowering of the eyebrows - and we can detect this automatically using our facial expression analysis software. Currently, we have started to empirically investigate how valid this signal is for the detection of confusion. The next step is to find out what impact confusion has on decision performance and quality, and how confusion detection could be used to support decision making.