reinforcement
🇺🇸
/ˌriːɪnˈfɔːrsmənt/
🇬🇧
/ˌriːɪnˈfɔːsmənt/
extra people sent to help, like soldiers or police
They called for reinforcement when the crowd grew too large
making something stronger, like a feeling or belief
Positive feedback provides reinforcement for good behavior