psyc4600 Psychological Measurement
Overview
For this week’s assignment, you will show your understanding of two key concepts in psychological measurement: reliability and validity. Reliability means that results are consistent, and validity means that a tool measures what it is supposed to measure.
You will read a short case study about a new scale. Based on the information provided, you will identify the type of reliability shown and explain why it fits that category. You will also identify the type of validity demonstrated and explain your reasoning. Your answers should include at least two scholarly sources and be written in a clear, professional manner.
This assignment will help you practice recognizing reliability and validity in real-world examples, which is an important skill for understanding how psychological tools are evaluated.
Note: FirstPass, an AI-powered feedback tool, is available to use as you draft this assignment. The FirstPass tool for this assignment is available in the Weekly To-Do List and includes directions on how to upload your draft to receive real-time feedback before you submit for a grade.
Preparation
Download the Week 3 Assignment Template [DOCX].
Review the following case study:
A clinical psychologist develops a new scale to measure depression symptoms. She wants to create a tool that allows for faster and more efficient screening in busy clinical settings, where time is limited and early detection is important. The scale includes questions about mood, sleep, energy levels, and feelings of hopelessness. To test the scale, she asks two different clinicians to score the same group of patients using the scale. The scores from both clinicians are very similar. Later, she compares the scale scores to diagnoses made using a well-established clinical interview. She finds that patients who score high on the scale are also diagnosed with depression using the interview, while those with low scores are not diagnosed with depression.
Instructions
- Complete the template by typing your responses directly into the designated sections.
- For all sources cited in-text, include them on the References page in proper APA format.
- After drafting your initial responses:
- Upload your assignment to FirstPass for feedback.
- Use the feedback provided to revise your work.
- Repeat this cycle of revising and requesting feedback until you are satisfied with your assignment.
- Submit the final version of your assignment to the assignment drop box.
Citation Requirement
- Cite at least two different references. Visit the Bachelor's in Psychology Library Research Guide for help finding resources in the Capella University Library.
- Use narrative or parenthetical citations when addressing the prompts.
- Ensure that all in-text citations correspond to a full reference entry on the References page in correct APA style. Use Academic Writer for guidance in citing sources in proper APA style. See the Writing Center for more APA resources specific to your degree level.
- Acceptable sources include your textbook, peer-reviewed journal articles, and chapters in edited books. Non-scholarly sources (e.g., blogs, personal websites) are not appropriate for this assignment.
Competencies Measured
By successfully completing this assignment, you will demonstrate your proficiency in the following course competencies and scoring guide criteria:
- Competency 2: Apply the concepts of reliability and validity to evaluate psychological research.
- Explain how the type of reliability demonstrated in a case study was determined, supported by an appropriate scholarly source.
- Explain how the type of validity demonstrated in a case study was determined, supported by an appropriate scholarly source.
- Competency 5: Communicate in a manner that is scholarly, professional, and consistent with expectations for professionals in the field of psychology.
- Demonstrate good scholarly writing skills with minimal errors and appropriately integrate ethical use of AI tools.
- Apply correct APA style for the minimum number of in-text citations and references.