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pdf - Nyenrode Business Universiteit

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126 CHAPTER 5. CONCLUSION<br />

5.3 Limitations and Suggestions for Further Research<br />

As any study, the research presented in this thesis is subject to a number of limitations. In<br />

this subsection, I discuss the limitations that I consider to be the most important for my<br />

study. These limitations include the drawback of studying control instruments in isolation,<br />

the potential issues caused by using survey data in terms of causality, and the quality of<br />

the measurement. These limitations and their consequences are discussed in the remainder<br />

of this chapter.<br />

5.3.1 Studying Control Instruments in Isolation<br />

Although RPE is part of a Management Control System that consists of many control<br />

instruments, this research project studies RPE as an isolated control instrument. I do so<br />

because of the design of the study in general and of the questionnaire in particular. Because<br />

I focus on a single control instrument, I do not have data (or theory) on other potential<br />

control instruments that are used, for example, to reduce noise in the performance evaluation<br />

or mitigate the room for managerial opportunism. This lack of data may affect the<br />

results of this study. According to Chenhall (2003), one drawback of studying the specific<br />

elements of a control system in isolation from the other organizational controls potentially<br />

leads to model underspecification.<br />

Although I acknowledge Chenhall’s warning, I deem it necessary to study this specific instrument<br />

in isolation first before taking on a more holistic approach. My study is one of<br />

the first to investigate RPE at the lower echelons. Before this study, we had little empirical<br />

understanding of how RPE works in the evaluation and compensation praxis of business<br />

unit managers. A focused study that analyses a single control instrument can invest the<br />

ample space and time that is required to approach the instrument with multiple measures<br />

and perspectives. Doing so is necessary to obtain a deeper understanding of the subject<br />

matter, which will, for example, allow one to establish measures that can be incorporated<br />

into other studies with broader scopes. Nonetheless, studying the interaction of RPE with<br />

other control instruments within the control system is an important next step to understanding<br />

RPE. This analysis may shed more light on the theories adopted throughout this<br />

thesis. This thesis leaves the holistic study of the role of RPE in the control system to<br />

future research.

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