"general impression about" is a perfectly valid expression in written English.
You can use it whenever you are talking about someone's opinion or view about a particular subject. For example, "I have a general impression about him that he is a hardworking and reliable person."
Although most soils of the highlands are characterized by soil acidity and high P fixation due to intensive weathering and leaching attributed to high rainfall [7], there is limited knowledge about soil P distribution, transformations, and fertility in Ethiopia, but the general impression about the soils is that availability of P in the dominant soils of in the country is relatively low [2, 7].
They may fall back on a general impression about the category to which the specific issue relates, or they may draw on more general values [ 32].
The researchers (AS, SL and JL) undertook this analysis independently by reading and re-reading responses to each focus group question, word by word, then undertaking memo-writing to begin formulating general impressions about students' responses.
Students who participated in this program were required to submit a self-assessment worksheet, summarizing their learning, self-reflection, and general impressions about the class they had participated in, as well as a portfolio with documentation relating to other self-learning outcomes after completing the class.
Consumers whose general impression of the news stories about grapefruit consumption was positive significantly increased their consumption, and negative tones in the health news stories are significantly less likely to increase consumption compared to consumers who are neutral or don't recall the tones.
In her post-match news conference, she was asked about the general impression that she had a chance to become a combination of the next Maria Sharapova and Anna Kournikova.
After the examination, participants were interviewed about their general impression of the examination and they rated pain and discomfort on a visual analog scale (1=excellent to 6=very poor, unbearable).
"My general impression is that nobody really cared about the impact of foreign students prior to 9/11," he told NextWave by e-mail.
The reasons cited include concerns about security and a general impression that private banking clients did not want that kind of relationship with their bankers.
Furthermore, according to our general impression, the respondents were reluctant to speak about the use of coercive power.
("Isn't that sweet?") As Dykstra moved about the house, he gave the general impression of a lotto winner who can't quite believe his good fortune and needs constant reminding that what he sees around him is real.
