प्रबंधन और प्रशासनिक सिद्धांत में मिशिगन अध्ययन निम्नलिखित में से किससे संबंधित हैं?

Which leadership style was identified by the Michigan Leadership Studies as being most effective for higher performance and productivity?

Which of the following are characteristics of 'Job-centred Supervisors' as identified by Rensis Likert? (i) Exercises general supervision (ii) Has little confidence in subordinates (iii) Focuses heavily on production pressure (iv) Is punitive and critical when mistakes occur