I study the neural and psychological underpinning of advice-taking. We all have some insight about what we (dis)like and about what defines us as an individual. However, when we are placed in a (social) environment these preferences can suddenly change without us actually noticing it. We shape our environment as much as our environment shapes us. For example in treatment decisions, whether a clinician and patient can understand each other’s opinions will affect both the type of information that they exchange as well as how likely they are to consider each other’s viewpoints. In some cases, updating preferences when we are faced new evidence or opinions is beneficial; in others, excessive vulnerability to (the opinions of those in) our ever-changing environment can be overwhelming. I use computational and neural techniques to better understand how people process decision-information in well-controlled laboratory experiments. I hope that, by better understanding how and why people decide one way or another, we can start to support people in identifying and selecting what they genuinely want in important everyday situations too, such as in court or the clinic.