Extrinsic and intrinsic motivation at 30: Unresolved scientific issues.

Reiss (2005) looked at the old claim that external rewards kill inner drive. The paper checks thirty years of studies that warned "use prizes and the child will stop liking the task."

It is a theory review, not an experiment. The author read piles of motivation papers and asked: do the data really show that reinforcement hurts?

The review says the evidence is weak. Many anti-reward studies used shaky methods or mixed up short-term mood with long-term love of learning.

Steven concludes ABA should keep using reinforcement without fear. The worry that tokens turn kids into robots is more slogan than science.

Travers et al. (2025) picks up the same shield twenty years later. They defend ABA against wider attacks, calling "coercion" claims myths. The pair shows the field still has to fight the same battle.

Paniagua (1990) asked us to look at a client’s past reinforcement history. Steven’s point joins that call: check the data, not the dogma, before you drop useful procedures.

Edwards et al. (2020) also rewrites a sacred topic, saying the usual story of motivating operations and negative reinforcement is off track. Both papers tell BCBAs to question popular tales and trust careful data instead.

You can stop apologizing for using points, praise, or pennies. The paper gives you citations to show teachers or parents that rewards do not steal joy. Keep designing strong reinforcement plans while the critics hunt for better proof.