The Time Series Study on California's "Three Strikes and You're

Multiple Choice

The time series study on California's "three strikes and you're out" program to reduce crime used which of the following variations on the basic time series design?

A) the researchers added an "interruption" to the sequence of events
B) the researchers added a switching replication, comparing California with another state that implemented the program 6 months after California
C) the researchers added a control group, comparing California with Texas
D) the researchers added a second dependent variable, comparing felonies with misdemeanors