In the context of the scientific method in psychology, which type of research source provides the best firsthand information?

• A. Secondary sources
• B. Tertiary sources
• C. Primary sources
• D. Anecdotal reports

Answer: (C)

Verified step by step guidance

1. Understand the definitions of the different types of research sources: Primary sources are original materials or evidence directly related to the topic, such as original research articles or firsthand data; Secondary sources interpret or analyze primary sources, like review articles; Tertiary sources summarize or compile information from primary and secondary sources, such as textbooks or encyclopedias; Anecdotal reports are personal stories or individual observations, which are not systematically collected data.
2. Recognize that in the scientific method, firsthand information is crucial because it provides direct evidence without interpretation or bias introduced by others.
3. Identify that primary sources provide this firsthand information because they contain original research findings, data, or observations collected by the researchers themselves.
4. Contrast this with secondary and tertiary sources, which rely on the interpretation or summarization of primary data, thus being one step removed from the original evidence.
5. Conclude that among the options given, primary sources are the best type of research source for obtaining firsthand information in psychology.