H. Appel

The interplay between Facebook use, social comparison, envy, and depression

J. Crusius, A. Gerlach, H. Appel, 2016 .

Social Comparison, Envy, and Depression on Facebook: A Study Looking at the Effects of High Comparison Standards on Depressed Individuals

Jan Crusius, Alexander L. Gerlach, J. Crusius, 2015 .

“I Know What I Like” – Indecisiveness Is Unrelated to Behavioral Indicators of Evaluation Difficulties

B. Englich, H. Appel, Juliane Burghardt, 2021, Frontiers in Psychology.