The phrase "a trial session" is correct and usable in written English.
It can be used when referring to a preliminary meeting or event intended to test or evaluate something before a final decision is made.
Example: "We will hold a trial session next week to assess the effectiveness of the new training program."
Alternatives: "a test session" or "a preliminary session".
Al-Jamri said before a trial session on 19 June that the fabricated news articles were sent to Al-Wasat from a Saudi IP address and that they were not verified properly due to the previous attacks on Al-Wasat.
The test was demonstrated to the participants and they were allowed a trial session before the actual test.
Participants were allowed a trial session for familiarization, and three experimental sessions were performed with an adequate rest between each tests.
Schedule a trial session with potential therapists.
It's good to go for at least a trial session with an acupuncturist, just to see whether it helps or not.
Some photographers will let you meet for a trial session; this can give you a better idea of what the photos will look like.
I saw a flyer advertising a free trial session of Grinberg Therapy, which was described using phrases such as "energy flow" and "holistic healing".
Thus, monkeys do not learn to avoid objects associated with the devalued reinforcer over the course of a critical trial session, so an impairment in devaluation in monkeys with orbital prefrontal lesions cannot be ascribed to a failure to exhibit this behavior.
Learning within a five trial session was assessed in terms of mean number of errors by trial by session.
The children in the ADHD group were assessed with parents attending and they also had a preliminary trial session.
One day after the last training trial, the mice were subjected to a probe trial session in which the platform was removed from the pool, allowing the mice to swim for 120 s to search for it.
