Chapter 2: Psychological Research
Learning objectives
- Explain how the scientific method is used in researching development
- Explain the use of quantitative and qualitative research, and basic and applied research
- Explain the importance of reliability and validity in research
- Describe methods for collecting research data
- Explain correlational research
- Describe the value of experimental research
- Compare the advantages and disadvantages of developmental research designs (cross-sectional, longitudinal, and sequential)
- Describe challenges associated with conducting developmental research
Psychological Research Methods
An essential part of learning any science is having a basic knowledge of the techniques used in gathering information. The hallmark of scientific investigation is that of following a set of procedures designed to keep questioning or skepticism alive while describing, explaining, or testing any phenomenon. Not long ago, a friend said to me that he did not trust academicians or researchers because they always seem to change their story. That, however, is precisely what science is all about; it involves continuously renewing our understanding of the subjects in question and an ongoing investigation of how and why events occur. Science is a vehicle for going on a never-ending journey. In the area of development, we have seen changes in recommendations for nutrition, in explanations of psychological states as people age, and in parenting advice, to name a few examples. So think of learning about human development as a lifelong endeavor.
