There are three category of children , according the psychiatrists Thomas and Chess , The Easy Child , The Difficult Child and The Slow to Warm Up Child .
The easy child - as term suggest is one of best type of child , who have positive mood , very regular and adapt to new conditions very fast.
The Difficult Child - these of type children , cry most often , irregular daily activities and low to adapt new conditions.
The Slow to Warm Up Child - these type of children , have very low activity level , least to adapt new conditions .
Hence , from the given information of the que4stion,
Fixed Interval is a type of reinforcement schedules, which is used to reinforce targeted behavior in individuals. In this case teacher reinforces an average of every third correct response.
