Final answer:
The least effective training method for new employees is a non-interactive lecture because it limits engagement with the material and fellow participants, impacting learning quality and retention.
Step-by-step explanation:
The least effective way to have a training meeting for new employees is delivering a lecture without any interaction. This method does not encourage active participation or discussion, which are key components of effective learning and retention.
According to research, effective training can be measured by the immediate response of the employee, testing at the end of training, behavioral measurements of job activities, and ultimate results such as productivity and profits. Interactive techniques like the use of multimedia and visual aids, as well as engagements like small group discussions and live polls, have been shown to enhance the training experience.
Whereas, a one-sided lecture limits the opportunity for employees to engage with the material and with each other, reducing the overall effectiveness of the training session.