Many parents or caretakers do not realize that sharing and teamwork can actually be reinforced and learned based on numerous research studies.  Teaching your children to work as a team and to share will reduce the behavior problem frequency in the future that the parent will have to address in the home and at school! The following are some ideas on how to encourage these skills. 
1.  One idea is to reward your children for working or playing with no tantrum or behavior problems. For example, if they are playing a game give social praise or a snack only on days they work together or play nicely! 
2. Practice giving the something and telling them they can have that item  (such as a cookie) only if they share it with their siblings.
3.  Encourage children to take turns playing with a toy when they both want to play with it.  You might even suggest they discuss it and come to some agreement about the use of the toy.
4.  Purchase stories  that include the theme of sharing or teamwork and discuss the story after reading it together.
5.  Point out to your children when other people display team or sharing skills. For example, if someone picks up something that someone drops compliment the action by saying " wow what a gentleman he helped that woman!" 
6.  In the evening roleplay and discuss how people work together or play together at school or in the community. 
7.  Play alot of games with your children and focus on good sportsmanship, complimenting each other on playing skills, taking turns, talking nicely to each other and manners. Praise these skills when the occur during the game!
Developing these social skills of teamwork and sharing will probalby lead to many happy experiences when your child is with another person or a group and a happier life! 

Computers and electronic devices have become very powerful reinforcers for many children in the past few years.   Parents and Caregivers can use the following methods to more effectively and without behavior problems such as tantrums.
1.  First thing the caregiver should do is select the reinforcers specificlally through asking the child or an inventory which identifies the most powerful electronic reinforcers. 
2.  Next the caregiver or parent should explain specifically to the child what he has to do to attain the reinforcer. For example, the parent might say if you do your chores, have no tantrums or screaming, get ready for school on time then you can use the iphone that day.
3.  Next once a behavior occurs he/ she will not gain access to the reinforcer the next day or longer as specified by the parent or guardian. This should be a definite rule regarding how many days or hours of good behavior are required to attain the electronic and how many days he/she must have good behavior in order to attain the reinforcer for a specified amount of time. 
4.  If the child resists giving up the computer or phone there are environmental ways of preventing the use of them without a struggle. One way is to put the phone away once they go to sleep if there was a tantrum that day.  Secondly, the keyboard or mouse can be put away in a locked reinforcer cabinet if there is a tantrum and the reinforcer is the computer. Another technique is to remove the battery from a device, turn off the fuse box.
5. Parents might consider adding a password that can be turned on and off on a electronic device or computer. 
6. Parents should consider turn off a television with the remote or if there is a parental lock or timer this can be useful in making sure the reinforcer is delivered consistently.  
7.  Parents should try to give the child at least one or two warning statements so that the child is prepared and realizes that he has not behaved appropriately. 
8.  Finally it is important to make sure that the parent states the rule as a house rule and not as something mean imposed on the child. Also, the parent should state something empathetic such as " I wish you could have earned the phone or computer today that is too bad I am so sorry about that. Maybe you will earn it tommarow." 
9.  In order to prevent a tantrum parents should include the time from the loss of the item to the time it will be earned as a criteria for earning the reinforcer again. For example, if you are good and do all your chores and no tantrums or screaming you will probably be able to earn computer time tommarow.
In general, the parent should be viewed as a  sort of Santa Clause or bearer of gifts for the child not an negative person that enforces the contingency. This attitude of the parent will lead to a more postive relationship with the parent, less arguments and behavior problems in the future!:)

People often start to get agitated and then it escalates into a tantrum. Parents and caregivers often have to   deescalate the situation or calm it down after it occurs. The following is a list of possible steps to take beginning with deescalation and then to calming a situation. Each person is different so an observation and analysis of the tantrum behavior will help and is essential to identify which methods to use.
1.  If the caregiver or parent observes any facial expressions, movements or behavior that show agitation it is best to intervene at this point. The intervention can include relaxation techniques, redirection or a cue word to calm the person down.
2.  Once the behavior starts to begin or even when the precursor facial expressions begin the parent/caregiver can redirect the person to another activity or distract them by discussing another topic.
3.  Another method of deescalation is to provide some relaxation methods for the person. Perhaps the person is tired and the caregiver can ask if they want to lay down or take a drink of water to relax. 
4.  Finally, if the behavior has started to occur then usually removing the person from the environment, moving the audience away or ignoring the person and engaging in another activity will deescalate the behavior. 
5. Finally any major reinforcers such as affection or activities preferred should not occur if the behavior has escalated at all into verbal or physical aggression. 
6. Also, in some cases training or physical management might be necessary if tissue dammage is imminent. 7. 7. However, on of the  best way to avoid aggression or tantrusm from occuring is to fill the time during the day with activities and reinforcers for those activities.Finally one should seek advice of a trained Behavior Analyst for aggression or tantrums.