As you have seen, scientists frequently use multiple lines of scientific evidence to support or counter a scientific hypothesis and to inform further research. During your studies you have begun to develop skills to help you to find, evaluate and use different lines of scientific evidence. For the rest of this topic you will develop these skills by collecting evidence from the module material that supports a link between BDNF, neuroplasticity and depression. As you study the rest of this topic, make a note of any evidence linking BDNF, neuroplasticity and depression in the Topic 7 Activity 3.4 evidence log (Word or PDF version) that we have provided.