Final answer:
A likely reason Deloitte shifted to focusing on future actions of team leaders regarding employees is because traditional ratings may suffer from rater bias or a lack of comprehensive observation, leading to inaccurate performance assessments.
Step-by-step explanation:
A possible reason behind the shift in thinking that recognizes that raters' assessments of performance may be inaccurate, but the way they plan to work with someone in the future says more about that individual's actual performance is a. Ratings might be influenced by a rater's bias or failure to observe employees perform. Research in industrial psychology indicates that many performance evaluations are disliked by both organizations and employees, and their effectiveness is often brought into question. The literature suggests that performance appraisals have often been used incorrectly or are unsuitable for an organization's culture, contributing to inaccurate assessments due to rater biases, perceptions, and the failure to observe all aspects of an employee's performance.
Furthermore, studies such as those by Atkins and Wood (2002) have found that self and peer ratings can be unreliable, and even supervisors may be influenced by the modesty of employee feedback. Performance appraisals, like the 360-degree feedback appraisal, seek to provide a more complete picture through multiple perspectives, yet variability in ratings can still occur. Deloitte's new approach addresses these challenges by focusing on future actions rather than past performance ratings, thus aiming to reduce subjectivity and enhance the continuous improvement of individuals within teams.