This lecture goes through some threats to external validity in a quantitative research. The lecture also introduces single-subject research design in quantitative research.

Before any lecture either open or save to your computer the assigned PowerPoint presentations.

Assignment before the lecture: None

Open or save the PowerPoint slides related to this lecture ELSS612_S5L4_Leskinen.pdf​.

Listen to the lecture, and afterwards do the assignment given below.

Assignment after the lecture: None.