How to Do a One-Tailed, One Sample t Tests in SPSS (10-5)

Conducting a one-tailed, one sample t test in SPSS is possible, if you know what parts of the output that you can and cannot use. This example uses a story about Ritalin to look for changes in attention in only one direction, using a one-tailed test. This example uses fictitious data. The example references an effect size calculator that can be used to determine critical values and precise p-values for both one- and two-tailed tests at a variety of alpha levels. Effect size calculator for t Tests: https://drive.google.com/drive/folders/1n9aCsq5j4dQ6m_sv62ohDI69aol3rW6Q?usp=sharing This video teaches the following concepts and techniques: How to run a one-sample t test in SPSS using the one-tail option IBM SPSS Statistics software Link to a Google Drive folder with all of the files that I use in the videos including the Effect Size Calculator for t Tests and datasets. As I add new files, they will appear here, as well. https://drive.google.com/drive/folders/1n9aCsq5j4dQ6m_sv62ohDI69aol3rW6Q?usp=sharing