Abstract
This paper reconsiders the trade-off between specialization and coordination by focusing on as yet neglected forms of implicit coordination. While specialization draws on idiosyncratic knowledge pertaining to the worker’s specific tasks and environment, implicit coordination is based on knowledge common to all workers. Accordingly, the trade-off between specialization and coordination translates into one between idiosyncratic and common knowledge. Investigating this trade-off I determine the organization’s optimal knowledge structure depending on a number of organizational and environmental parameters. Further extensions of the model allow for explicit coordination through communication, differentiate between common knowledge at the corporate level and departmental level, and apply important results to the issue of corporate culture, interpreted as a specific form of common knowledge that likewise facilitates implicit coordination.
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Notes
The basic intuition of a fundamental trade-off between specialization and coordination certainly extends back to before Becker and Murphy (1992). A classical reference, for instance, is March and Simon (1958). However, the paper by Becker and Murphy is generally considered the starting point of economic analysis of this trade-off.
Although Hume ( 1976 ) already made explicit reference to the role of common knowledge in the coordination of human activities, it was Schelling (1960) who provided seminal ideas and Lewis (1969) who first gave a systematic account of common knowledge and its coordinative impact. The concept of common knowledge has subsequently been addressed in several attempts at rigorous formalization, e.g., by Aumann (1976), Milgrom (1981), and Barwise (1988).
This does of course not preclude vertical and lateral communication previous to a specific coordination problem as an important means for the inception of common knowledge. In fact, communication manifested in general instructions, manuals and brochures, trainings and social events, staff newsletters and small talk, etc. is an important channel for synchronizing individual knowledge sets and providing staff with common background knowledge. The distinguishing mark of implicit coordination, however, is that it aligns decentralized actions or decisions without communication when faced with a specific coordination problem.
More precisely, specialization in terms of narrowing the range of tasks a particular individual has to perform may actually entail two effects with respect to the individual’s knowledge set: On the one hand the set is itself narrowed, as it covers fewer tasks; on the other hand it is deepened, as concentration on fewer tasks more thoroughly exploits learning curve effects. Although these effects are in a sense opposites in their implications for workers’ requirements for task-specific human capital, they unambiguously attenuate workers’ wherewithal for implicit coordination and therefore underpin the model’s focal trade-off.
In this example the order form itself certainly represents an act of communication informing the production department about the promised delivery date. But this is unproblematic as the proposed model does not exclude communication whatsoever. Decisive is that the coordination itself, i.e. the selection of a new coordination equilibrium, was brought about without any communication in the face of the specific situation but solely on the basis of common knowledge.
For a more detailed discussion of φ(·), see Sect. 6. For a generalization accounting for an arbitrary φ(·), refer to Appendix 1. Alternatively, even if less fitting to the underlying story, implicit coordination could also have been modeled as the observation of a noisy signal with the noise rate being a positive function of p. The basic results, however, would remain unaffected.
I show in this extended setting that coordination by common knowledge is (partially) crowded out by another form of coordination, namely by a sticking to the status quo and reduced adaptation similar to that ascertained by Dessein and Santos (2006). Nevertheless, the main propositions hold true.
In light of numerous empirical studies finding a positive correlation between organization size and degree of internal specialization (Donaldson 1986 and Miller 1987 provide comprehensive surveys), this result seems at the same time surprising and needs further qualification. It hinges on specific assumptions that are only to a certain extent applicable to real-world organizations. On the one hand, it supposes that the extent of complementarity is driven by the overall size of the organization. This relation, however, is not only mediated by the specific production process and technology; organizations command several means of keeping complementarities at bay. In particular, organizational modularization—from simple departmentalization to sophisticated forms such as internal hybrids and loosely coupled organization (e.g., Zenger and Hesterly 1997; Foss 2003)—significantly reduces organization-wide interdependencies. It thus justifies the relaxation of this assumption and accounts for the existence of large scale and internally highly specialized manufacturers. (Sect. 6 presents an extension of the basic model considering departmentalization of the organization.) Furthermore, such organizations rely heavily on alternative mechanisms of coordination, especially authoritative decision-making and fiat, which could provide further explanations for their prosperity in spite of Proposition 3.
This assumption is made to facilitate the further exposition. Although it implies that explicit coordination through communication always performs worse than (or at best equally well in case of τ = 1 as) implicit coordination through common knowledge, this assumption is innocuous. No result derived in the following hinges on it.
For work concerned with an in-depth analysis of this trade-off between specialization and communication see the related literature referenced in Sect. 2.
Let Ω be the set of all possible events and contingencies the organization could face, ordered by the frequency of occurrence such that a corresponding density function f(Z) with Z ∈ Ω is non-increasing. If the subset of events the organization can successfully coordinate is proportional to the fraction of common knowledge, then the corresponding cumulative distribution function F(Z) can be interpreted as φ(p i ), i ∈ {2, 3}, exhibiting the required properties.
Subsuming such a notion of corporate culture under common knowledge seems unproblematic, as the latter is assumed in a broad sense to encompass besides mere propositional knowledge cognitive frames and categories more generally (including values, norms, beliefs, meanings, conventions and principles), as long as these are shared by a group of employees and guide employees’ behavior. Such a broad understanding of common knowledge, however, may preclude a conceptual equation of corporate culture and common knowledge, as the latter can comprise content beyond the conceptual scope of corporate culture (which differs in the work of different authors).
Sorensen initially hypothesized that corporate culture fosters organizational inertia and that therefore “[a]s industry volatility increases, the positive effect of culture strength on mean performance declines” (p. 77), which is quite the opposite to Proposition 2′. His empirical investigation of this relationship, using a sample of large, publicly traded firms in 18 markets, however, did not support his hypothesis and is therefore consistent with Proposition 2′ and the view of corporate culture expressed here.
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Acknowledgments
Parts of this research were done while the author was visiting INSEAD, Fontainebleau (France). The author is particularly grateful to Bernd Schauenberg and Timothy Van Zandt for numerous discussions and suggestions. The author is also indebted to Todd Bradley, Philipp Jäkel, Ino Vorwerk, numerous seminar participants as well as two anonymous referees for their helpful comments. Financial support from Deutsche Forschungsgemeinschaft (DFG) is gratefully acknowledged.
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Appendices
Appendix 1
In this appendix, I generalize the model as laid out in the main body by showing that the stated propositions also hold for an arbitrary h(p) subject to \( \partial h(p)/\partial p > 0 \), \( \mathop {\lim}\nolimits_{p \to 0} h(p) = 0 \) and \( \mathop {\lim}\nolimits_{p \to 1} h(p) = \infty \) as well as for an arbitrary φ(p) subject to \( \partial \varphi (p)/\partial p < 0 \), φ(0) = 1 and φ(1) = 0. In this case, I derive p* by drawing on the first order condition of the generalized payoff function
p* is then implicitly determined by
in case of an interior solution, i.e., \( p^{*} \in]0,1[ \), or takes the value \( p^{*} = 1 \) in case of a corner solution. Note that as \( B(0) > A(0) = 0 \), the total absence of specialization (i.e., p = 0) is never optimal. Should there exist multiple local maxima on [0,1], p* clearly takes the value of the global maximum. It can, however, be shown that subject to the additional assumption of the convexity of h(p) as well as of h′(p), multiple maxima can be ruled out.
Generalized Proof of Propositions 1–3
Assume \( p_{0}^{*} \in]0,1[ \) as the propositions pertain to the case of an interior solution. A decrease of α—an increase of β, \( \sigma_{\theta}^{2} \) , n, respectively—then yields \( A(p_{0}^{*}) > B(p_{0}^{*}) \). We know, however, that B(0) > A(0). From this follows by the intermediate value theorem that \( \exists p_{1}^{*} \in]0,p_{0}^{*} [:A(p_{1}^{*}) = B(p_{1}^{*}) \). \( \square \)
Generalized Proof of Proposition 4
Obtaining the second derivative of (22) with respect to n yields
\( \square \)
Generalized Proof of Proposition 5
To incorporate communication I extend (22) by analogy to (12) to
Differentiating this extended payoff function with respect to τ yields
\( \square \)
Generalized Proof of Proposition 6 (constructive sketch)
Assume again the existence of an interior solution, i.e., \( p^{*} \in]0,1[ \). Proposition 6 then implies that \( \exists \bar{\alpha}\forall \tau \in [0,1]:A_{\tau} (p^{*}) = B(p^{*}) \). This \( \bar{\alpha} \) can be obtained as follows: Determine the common intersection point p 0 by choosing two arbitrary \( \tau_{1},\tau_{2} \in [0,1] \), \( \tau_{1} \ne \tau_{2} \), and solving \( A_{{\tau_{1}}} (p) = A_{{\tau_{2}}} (p) \) for p. \( \bar{\alpha} \) is then implicitly determined by \( A_{\tau} (p_{0}) = B(p_{0}) \).\( \square \)
Generalized Proof of Proposition 7
Identical to the one given in the main body of the paper.\( \square \)
Appendix 2
In the basic model I assume that workers seek to maximize the outcome of the actions under their control while they neglect other workers’ results. This induces a kind of goal incongruence that transcends orthodox team theory. In this appendix, I discuss the opposite case of perfect goal alignment (and, concluding, varying degrees of alignment). I will show that in this setting, coordination by common knowledge is (partially) crowded out by another form of coordination, namely by adhering to the status quo and reduced adaptation, similar to that ascertained by Dessein and Santos (2006). Nevertheless, the main propositions hold true.
In case of perfect goal alignment, workers jointly seek to maximize (1). Their decision problem therefore constitutes a game with identical payoffs. In equilibrium, complementary actions are set to \( \forall j \in \{1, \ldots,n\} \backslash \{i\} :b_{ij} = E(a_{i}) \) and primary actions are accordingly chosen to maximize
where \( E(\theta_{i} \left| {s_{i},p} \right.) \) is the ex-post expectation value of θ i after observing signal s i with the precision h(p) as stated by (3). Plugging (3) into (27), I derive the optimal primary action as
and the optimal complementary actions accordingly as
Whereas the optimal complementary actions remain the same, the worker choosing the primary action underweights her private information (i.e., the signal) as compared to the basic model discussed in the main body. In other words, she consciously forgoes adaptation and therefore local efficiency to foster smooth integration and global coordination of activities. To keep things tractable, I assume again in the following h(p) = p/(1 − p) and φ(p) = 1 − p (a generalization to an arbitrary h(p) and φ(p) would proceed along the lines of Appendix 1). The adjusted payoff function is then given by
and the optimal fraction of idiosyncratic knowledge is
It is immediate that Propositions 1–3 hold true. Likewise, the validity of Propositions 5 and 7 can easily be shown in this setting. This is not true, however, for Propositions 4 and 6. Additionally, I yield the general result that in case of goal alignment, the optimal fraction of idiosyncratic knowledge is always greater than in the event of goal incongruence, as
By combining ‘local’ and ‘global’ incentives, i.e., by weighting the opposite cases of goal incongruence (as in the main body) and perfect goal alignment (as in this appendix), one could easily achieve varying degrees of goal alignment. The results then evidently generalize: The higher the degree of goal congruency, the less private information is used for determining primary actions, the more coordination via common knowledge is crowded out by coordination via sticking to the status quo, and the greater is the optimal fraction of idiosyncratic knowledge.
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Hecker, A. Specialization, implicit coordination and organizational performance: trading off common and idiosyncratic knowledge. Rev Manag Sci 5, 19–47 (2011). https://doi.org/10.1007/s11846-010-0043-4
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DOI: https://doi.org/10.1007/s11846-010-0043-4