"be a useful aid" is a correct and usable phrase in written English.
It can be used when referring to something that can help in some way. For example: "Having access to a reference guide can be a useful aid in completing the task."
Cognitive classification models could be a useful aid to the diagnostic process when used in conjunction with other data sources including clinical history.
A word counter along the lines of the LENA device that's used as part of the program Talbot describes may be a useful aid for rewarding parents for speaking more, but it is not nearly enough.
"They are a snapshot and can be a useful aid, but will never replace clinical assessment.
When you are stuck in bad traffic, the satnav can also be a useful aid to stochastic experimentation – "sod it, I'll just turn down that road for five miles and see what happens".
Thus, it can be a useful aid in treating heart disease, high blood pressure and depression, conditions common among older people who may be unable to benefit from more physically demanding exercise.
This tool can be a useful aid for causality assessment.
Social Network Analysis (SNA) [ 59, 60] can be an useful aid to further study and understand these complex dynamics of integrated care.
Garden bird tables are a useful aid here, but an additional strategy seems to be to carry on feeding after dark by the light of street lamps.
For pupils she believes it is a useful aid over time as students "know they have lots ofrecordings of themselves they can watch to see their own progression".
"This is a useful aid to real-life poets looking for inspiration or for help with alliteration or rhyming," he said.
Deviation of various characteristics from the normal, observation of which constitutes the general inspection of an animal, is a useful aid in diagnosing disease.
