The myth of Cupid and Psyche
This video tells the origin of the other half of the word psychology

Placebo-effect
A very informative educational video on the topic

Pearson correlation coeffecient calculator
You can easily calculate correlations with the help of this website

Phineas Cage
BrainCraft video on the case of Phineas Cage

Emotions in different cultures
YLE news in Finnish

How to boost your motivation? Self-regulatory techniques for studying and working. 
YLE news in Finnish

Animals in front of a mirror
What does this video tell you about the mental capacities of these animals?

The difference between classical and operant conditioning
TED-ed video on the topic

Pigeon Ping Pong
Through operant conditioning the famous psychologist B. F. Skinner was able to teach ping pong to pigeons

Thorndike's puzzle box
This video exemplifies operant conditioning

The Pomodoro Technique - Study and Productivity Technique
The Med Schools Insiders video on the topic

Spaced repetition in learning
Osmosis video on the topic

How to build focus and concentration for studying and work?
Better than Yesterday video on the topic

252 Influences Related to Student Achievement
Hattie et al. meta-studies on factors related to learning in schools