Atherapist indicates that a client no longer has to record his daily activities if he can maintain a sober lifestyle. this is an example of positive reinforcement negative reinforcement extinction punishment

Positive Reinforcement

Explanation:

Positive reinforcement refers to the introduction of a desirable stimulus after a behavior. The desirable stimulus reinforces the behavior, making it more likely that the behavior will reoccur.

Positive reinforcement is usually introduced to encourage certain behavior.

positive reinforcement refers to introducing a desirable stimulus (i.e a reward) to encourage the behavior that is desired. Positive reinforcement adds a desirable stimulus to the situation.

The therapist wants to encourage soberness in his client, hence, he rewarded the client by telling him not to record his daily activities if he can maintain a sober lifestyle

Types of positive reinforcement

1) Natural reinforcers: reinforcers that occur directly as a result of the behavior.

2) Token reinforcers: those that are awarded for performing certain behaviors and can be exchanged for something of value.

3)Social reinforcers: those that involve others expressing their approval of a behavior.

4)Tangible reinforcers: reinforcers that are actual physical or tangible rewards.

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .