In order to examine the relationship between early life experiences and adult criminality, Dr. Robbins asks his research participants to fill out questionnaires describing their early lives. He then obtains copies of their arrest records from the county courthouse. The questionnaire used in Dr. Robbins' study would bedata, whereas the arrest records would be data

S-data; L-data

Explanation:

B-data (behavioral data), I-data (informants' data), S-data (self-report data), and L-data (life data) are the four types of psychometric data that are used by the researchers. These data helps the researcher for a better understanding of the behaviors and perceptions of the individuals.  

S-data (self-report data) are the information that includes the political thoughts, beliefs, personality and attitude of the individual.

L-data (life data) includes the information related to the personal lives of the individual. It includes the academic information, occupational information, marital status, choice of recreation, children and personal preferences of the individual.

the use of electrical signals that transit messages is know as