On Monday, Johnny's mother gave him cookies and milk after he had played quietly for 10 minutes. On Tuesday, she required 20 min
utes of quiet play before treat time. On Wednesday, she gave him cookies only after he played quietly for a full half hour. Johnny was taught to play quietly for extended periods through
Shaping may be defined as the phenomena that are primarily used for the experimentation analysis of the behavior. The response gets changed after the successive stimulus of the individual.
Johnny's response get changed day by day as he gets he repeated stimulus daily. The milk and cookies acts as the stimuli and different time of quiet play represent his response. The frequency of the Johnny's behavior is increasing day by day as the response become frequent in shaping.
Shaping refers to the action of shaping, creating a pattern of behavior, making it followed by that citizen who wants to behave in a different way than he is used to acting in his daily life.
That's what Johnny's mom is doing. She wants him to adopt the behavior of playing in silence and for that reason, she shapes his behavior by offering rewards whenever he spends a period of time playing in silence.
I believe the answer is: B. Omit unnecessary task and vary activities
The main purpose of an ergonomics is to study worker's efficiency in the working environment. Efficiency could only be achieved if all time and efforts that workers made is spent accordingly, and focused solely to things that matters to their goals.
In the case of an injury, blood transportation is important to deliver to form a barrier to keep blood loss. Blood platelets clot to prevent blood loss, white blood cells as well are used to close the wind and prevent any external bacteria from invading the inside of one’s body.