There are a few factors that determine how much a stat increases in a training session. Also note training adds a week of time to a monster's age.
Where confidence (C) is a number between 1 and 10 (represented by 1 bar for ever 2 numbers and rounded down; for example, a confidence of 5 displays 2 bars on the info screen), stat gain per training is as follows:
- Baby/Senior: 0.5C
- Adolescence/Middle Age: 0.75C
- Adult: 1C
- Amazing! stat gain: 1.5C
- Failed stat gain: Always 1