HSB4U: Sentence Structure
Correct Comma Usage
The negative consequences of directed change, a
form of acculturation, were evident in residential
schools.
Directed change was a form of acculturation used in
residential schools; it had many negative
consequences.
According to social science research, positive
reinforcement is more effective than negative
reinforcement.
Positive reinforcement is more effective in producing
behaviour modification than negative reinforcement,
say social scientists.
Skinner, the originator of operant conditioning, did
many experiments on rats and pigeons.
Skinner conducted many experiments on rats and
pigeons on his way to devising his theory of operant
conditioning.