Spirited kids, or spirited children is similar to the concept of Indigo Children but it is more mainstream in the philosophies.
Spirited kids can be described as "more". More intense about their emotions, very high-energy, extremely assertive.
According to Mary Sheedy Kurcinka from "Raising Your Spirited Child" book and workbook ....
The "Spirited
Child" main characteristics are:
INTENSITY (loud and dramatic-focused outward, quiet and
intently observant - focused inward),
PERSISTENCE ("lock in" to important ideas,
love to debate, goal oriented),
SENSITIVITY (easily over stimulated by their environment,
low sensory thresholds to any of the five senses),
PERCEPTIVENESS (easily distracted, notice everything
going on all the time),
ADAPTIBILITY (don't transition/shift from one activity
to another easily), with
REGULARITY natural schedules for eating or sleeping),
ENERGY (physically active, busy exploring all the time),
FIRST REACTION (quick withdrawal when first encountering
anything new), and
MOOD (as in moody) as "bonus" characteristics.
In other words, spirited children are "more" of each characteristic.