Study guide with lecture notes for Psychology Bachelor 1 at Leiden University

Lecture notes with Psychology Bachelor 1 at Leiden University

Table of content

  • Workgroup notes with Personality, Clinical and Health Psychology - 2018/2019
  • Workgroup notes with Inferential Statistics - 2018/2019
  • Lecture notes with Experimental and Correlational Research - 2018/2019
  • Workgroup notes with Experimental and Correlational Research - 2018/2019
  • Lecture notes with Social and Organizational Psychology - 2018/2019
  • Lecture notes with Developmental and Educational Psychology - 2018/2019

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Workgroup notes with Inferential Statistics at the Leiden University - 2018/2019

Workgroup notes with Inferential Statistics at the Leiden University - 2018/2019

The answers can be found in the corresponding download file (right column)

Week 1

Preparatory assignment 1.0

Theory

  1. What symbols are used for the population mean and the sample mean?

  2. What is the difference between the H0 and the Ha?

  3. What is the definition of a p-value?

  4. What is the definition of the rejection criterion α?

Application

Select the correct response(s). (More

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Workgroup Answers with Inferential Statistics at the Leiden University - 2018/2019
Lecture notes with Experimental and Correlational Research at the Leiden University - 2018/2019

Lecture notes with Experimental and Correlational Research at the Leiden University - 2018/2019


Lecture 1

6/2/2019

-Correlation is about two variables being associated, but there is no evidence of causality. 

-Causality however requires multiple factors: covariance (variables have an association), directionality(cause precedes effect (in time)) and internal validity(eliminate alternative explanations).

- Correlations can be displayed in scatterplots that show:

       - Direction: positive or negative

       - Strength: density of the points

       - Shape: linear/nonlinear and homogeneous (one cluster) / heterogeneous (multiple clusters).              

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Workgroup notes with Experimental & Correlational Statistics at the Leiden University - 2018/2019

Workgroup notes with Experimental & Correlational Statistics at the Leiden University - 2018/2019

Week 1

 

Prep exercises

  1. Which combination of measurement levels is required for the use of the Pearson, Spearman, and point-biserial correlation respectively?
  2. Which formula is suitable for calculating the Pearson, Spearman, and point-biserial correlations?
  3. Which formula describes the relationship between rpb and tindep?
  4. Which combination of measurement levels is required for the use of the phi coefficient?
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