This document summarizes five journal entries by a student about cognitive biases:
1) The first entry discusses self-serving bias and how the student tends to take credit for successes but blame failures on external factors.
2) The second entry explains availability heuristic and how the student's parents worried about flying after the MH370 incident.
3) The third entry is about how mood affects cognition, as the student reacted angrily after being bumped on a bad day but not on a good day.
4) The fourth entry describes halo effect, as the student formed a good impression of a classmate based on his appearance and manners.
5) The last entry explains confirmation bias, noticing that people seeking opinions on phones