In this episode, Xavier Bonilla has a dialogue with Laura Wallace about source bias, trustworthiness, attitudes, and persuasion. They discuss what sources are and how bias is defined. They talk about perceived bias and its importance along with the spillover effect into other areas for a person. They mention the difference between biases and opinions. They discuss trustworthiness and some of the differences between perceived bias and perceived trustworthiness. They discuss the key component of perception as implicated in these concepts. They also talk about attitudes and attitude strength. They engage about attitudes being synonymous with opinions and how they impact certainty and persuasion along with many other topics. 
Laura Wallace has her PhD in Social Psychology from Ohio State University and is currently conducting research on source bias and persuasion at George Mason University. Her main research questions are how people change their minds, motivations for change, how people act on their beliefs, and how institutions promote progress. You can find her various scientific publications and other resources at her website. Twitter: @lauraewallace