John and darrin always welcomed lee when he sat with them during luch. one day john and darrin ignored lee when he sat down because they were having an important conversation. from then on john and darrin ignored lee with he sat with them. eventually lee stopped sitting with them. what behavioral proceeded accounts for lees changed behavior?

Extinction

Explanation:

Extinction is a recognized behavioral phenomenon capable of making a person to gradually adapt to a continuously changing environment. When a learned behavior begins to decrease in strength when there is no reinforcement. From the question, we can see that John and Darrin did not reinforce the behavior of welcoming Lee and thus gradually Lee began to adapt to a changing environment and reacted according to the situation by avoiding John and Darrin.

When the sun goes down, and the moon shines bright,The moon comes up and the sun goes down We find a little spot on the edge of town Twist off, sip a little, pass it around Dance in the dust, turn the radio up And that fireball whiskey whispers Temptation in my ear It's a feelin' alright Saturday night And that's how we do it 'round here.When the sun goes down When the sun goes down Oh oh oh oh yeah Down,down,down The sun is going down, down,down When the moon appears, you can always hear us say When the stars come out, you can always here us say [Chorus] The party doesn’t start 'til the sun goes down That’s when everything starts moving, Everybody out when the sun goes ...When the sun comes up The moon goes down You can find your way back home If you wait 'til the sun comes round Now that the tables have turned I'm taking all that I've learned-with me Now I can see The truth is what's burning free Repeat Chorus: Bridge/Solo Now I can stand on my own No fear of being alone-again The darkness ends The moment I see ...When the sun goes down And the moon comes up And the stars come out I can feel you all over (Feel you all over) All over (Feel you all over) Every time I breathe Air into my lungs I can close my eyes And feel you all over (Feel you all over) All over (Feel you all over) And don't think about it, no Suffer when the wind blows Don't think about itLyrics to 'Sun Goes Down' by T-Pain. Oh you're all looking up With hearts of devotion Through the dust and the heat lost to me In a cloud of emotion I have no motivation Children of ... your eyes coz another day is dawning, / Skies open Children of ... your eyes coz another day is dawning,

Explanation: