Determined

The Determined skill increases any action's chance multiplier slightly. Upon failing an action, its success chance is multiplied by a 1.5. For example, if a crewmember has a 20% chance to repair an object. the next success chance will be 30%, instead of 25%.

Besides being a cured ex-mush, where your Mush hunting skills have no use, there are very few scenarios where this skill would be more useful than any other skill that has. However, as a, it is the only skill that could be considered a combat skill.

All in all, being Determined is considered one of the weakest abilities in the game.

Affected actions
All actions with a success chance:
 * Upon failure, success chance is multiplied by 1.5x, instead of 1.25x