Some researchers have defined the content of the methodology.

Females provide all the parental care for the offspring, but researchers have not defined the details.

Some researchers define open marriages in narrower terms than others.

A third issue is that researchers sometimes define open marriages in overly narrow terms.

For the purposes of the report, researchers defined orphans as children younger than 15 who had lost one or both parents.

The researchers defined a frequent patient as one who made four or more visits a year.

The researchers defined as low earners anyone making less than $12,000 a year, in figures adjusted to 1987 value.

Within these disciplines, researchers have defined the case study and discussed its critical elements in a variety of ways.

For both theoretical and practical reasons some researchers define emotions according to one or more dimensions.

Our researchers define the problems and try to solve them.