The smith's new puppy cries in the middle of the night. various family members periodically check the dog, who responds by happily wagging his tail. lately, his crying has actually increased. this increase is likely due to

positive reinforcement

Explanation:

Based on operant conditioning, positive reinforcement occurs when a behavior is reinforced by adding a particular stimulus which increase the chances of a behavior occuring again in the future . When a particular behavior is rewarded the response or that behavior is enhanced or strengthened. The dog cries and it is rewarded by the family constantly checking on it as a result the crying increases because the dog knows it will be comforted when it cries. The checking on the dog has increased the crying behavior

usually, however, secession was popular enough without the of community leaders. prominent unionists, on the other hand, were a major reason that texas did not secede before march 1861. the most important of these was sam houston, the governor of the state from 1859 to 1861.

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6.3%

explanation:

the acceptance rate for yale university is 6.3%. this means that only 6 percent of people who apply actually get accepted!