Final answer:
The question revolves around the concept of trustworthiness and the fourth type of trust to complete the list is perceived competence. Trustworthiness, expert or authority, and perceived competence are crucial in understanding trust in social contexts.
Step-by-step explanation:
The subject mentioned in the question is related to the concept of trustworthiness in social relationships or interactions. It highlights the four types of trust: objective credibility, attribution of benevolence, perceived competence, and high cost of lying. Perceived competence refers to the belief that the trusted party has the required skills, knowledge, and expertise to perform effectively in a given situation. This dimension is crucial in establishing trust as it concerns the ability of the trusted individual or entity to fulfill expectations. When considering testimony, a trustworthy source is characterized by honesty, unbiasedness, rationality, and being well-informed. This aligns with the notion of an expert or authority, which is someone who is recognized for their specialized knowledge or skill in a particular area.