Theories and models
In the early seventies, Hill and Grunner reported that more than 100 theories of group development existed.Hill, W. F., & Gruner, L. (1973). A study of development in open and closed groups. Small Group Behavior, 4(3), 355–381. Since then, other theories have emerged as well as attempts at contrasting and synthesizing them. As a result, a number of typologies of group change theories have been proposed. A typology advanced by George Smith (2001) based on the work of Mennecke and his colleagues (1992) classifies theories based on whether they perceive change to occur in a linear fashion, through cycles of activities, or through processes that combine both paths of change, or which are completely non-phasic. Other typologies are based on whether the primary forces promoting change and stability in a group are internal or external to the group. A third framework advanced by Andrew Van de Ven and Marshall Scott Poole (1995), differentiates theories based on four distinct "motors" for generating change. Van de Ven, A., Poole, M. S. (1996). Explaining Development and Change in Organizations. The Academy of Management Review, Vol. 20, No. 3, pp. 510–540 According to this framework, the following four types of group development models exist: Some theories allow for combinations and interactions among these four "motors". For example, Poole (see below) found in his empirical research that seemingly complex patterns of behavior in group decision making result from the interplay of life-cycle and teleological motors. An important observation made by McGrath and Tschan in 2004 regarding the different models of group development found in the literature is that different models might explain different aspects of the history of a group.McGrath, J. E., & Tschan, F. (2004). Temporal matters in social psychology: Examining the role of time in the lives of groups and individuals. Washington, DC: American Psychological Association. On the one hand, some models treat the group as an entity and describe its stages of development as a functioning unit or "intact system" (p. 101). In this case, the models should be independent of the specific details of the task that the group is performing. On the other hand, some models might describe phases of the group's task performance and, because of this, tend to be very sensitive to the type of task that the group is engaged in (the "acting system", p. 101). Below are descriptions of the central elements of some of the most common models of group development (See Smith, 2001 Smith, G. (2001) Group development: A review of the literature and a commentary on future research directions. Group Facilitation; 3, pp. 14–45 and Van de Ven & Poole, 1996 for a more complete list of theories and models).Kurt Lewin's individual change process
The first systematic study of group development was carried out byTuckman's Stages model
Tubbs' systems model
Stewart Tubbs "systems" approach to studying small group interaction led him to the creation of a four-phase model of group development:Fisher's theory of decision emergence in groups
Fisher outlines four phases through which task groups tend to proceed when engaged in decision making. By observing the distribution of act-response pairs (a.k.a. "interacts") across different moments of the group process, Fisher noted how the interaction changed as the group decision was formulated and solidified. His method pays special attention to the "content" dimension of interactions by classifying statements in terms of how they respond to a decision proposal (e.g. agreement, disagreement, etc.). Based on this categorization, Fisher created his "Decision Proposal Coding System" that identifies act-response pairs associated with each decision-making phase. He observed that the group decision making process tended to be more cyclical and, in some cases, almost erratic. He hypothesized that the interpersonal demands of discussion require "breaks" from task work. In particular, Fisher observed that there are a number of contingencies that might explain some of the decision paths taken by some groups. For instance, in modifying proposals, groups tend to follow one of two patterns. If conflict is low, the group will reintroduce proposals in less abstract, more specific language. When conflict is higher, the group might not attempt to make a proposal more specific but, instead, because disagreement lies on the basic idea, the group introduces substitute proposals of the same level of abstraction as the original.Poole's multiple-sequences model
Marshall Scott Poole's model suggests that different groups employ different sequences in making decisions. In contrast to unitary sequence models, the multiple sequences model addresses decision making as a function of several contingency variables: task structure, group composition, and conflict management strategies. Poole developed a descriptive system for studying multiple sequences, beyond the abstract action descriptions of previous studies. From Bales' Interaction Process Analysis System and Fisher's Decision Proposal Coding System, Poole proposes 36 clusters of group activities for coding group interactions and 4 cluster-sets: proposal development, socioemotional concerns, conflict, and expressions of ambiguity. However, in his latter work, Poole rejected phasic models of group development and proposed a model of continuously developing threads of activity. In essence, discussions are not characterized by blocks of phases, one after another, but by intertwining tracks of activity and interaction. Poole suggests three activity tracks: task progress, relational, and topical focus. Interspersed with these are breakpoints, marking changes in the development of strands and links between them. Normal breakpoints pace the discussion with topic shifts and adjournments. Delays, another breakpoint, are holding patterns of recycling through information. Finally, disruptions break the discussion threads with conflict or task failure.McGrath's Time, Interaction, and Performance (TIP) theory
McGrath's (1991) work emphasized the notion that different teams might follow different developmental paths to reach the same outcome. He also suggested that teams engage in four modes of group activity: ''inception, technical problem solving, conflict resolution'', and ''execution''. According to this model, modes "are potential, not required, forms of activity" (p. 153) resulting in Modes I and IV (inception and execution) being involved in all group tasks and projects while Modes II (technical problem solving) and III (conflict resolution) may or may not be involved in any given group activity (Hare, 2003 uses the terms ''meaning'', ''resources'', ''integration'', and ''goal attainment'' for these four modes). McGrath further suggested that all team projects begin with Mode I (''goal choice'') and end with Mode IV (''goal attainment'') but that Modes II and III may or may not be needed depending on the task and the history of the group's activities. McGrath contended that for each identified function, groups can follow a variety of alternative "time-activity paths" in order to move from the initiation to the completion of a given function. Specifically, TIP theory states that there is a "default path" between two modes of activity which is "Gersick's punctuated equilibrium model
Gersick's study of naturally occurring groups departs from the traditionally linear models of group development. Her punctuated equilibrium model (Gersick, 1988, 1989, 1991) suggests that groups develop through the sudden formation, maintenance, and sudden revision of a "framework for performance". This model describes the processes through which such frameworks are formed and revised and predicts both the timing of progress and when and how in their development groups are likely, or unlikely, to be influenced by their environments. The specific issues and activities that dominate groups' work are left unspecified in the model, since groups' historical paths are expected to vary. Her proposed model works in the following way.Wheelan's integrated model of group development
Building on Tuckman's model and based on her own empirical research as well as the foundational work ofMorgan, Salas & Glickman's TEAM model
Combining multiple theories and the development models of Tuckman and Gersick, Morgan, Salas and Glickman (1994) created the Team Evolution and Maturation (TEAM) model to describe a series of nine developmental stages through which newly formed, task-oriented teams are hypothesized to evolve. The periods of development are labeled "stages" and conceived to be "relatively informal, indistinct, and overlapping", because "sharp demarcations are not often characteristic of the dynamic situations in which operational teams work and develop". According to this model, teams might begin a given period of development at different stages and spend different amounts of time in the various stages. Teams are not always expected to progress in a linear fashion through all of the stages. A team's beginning point and pattern of progression through the stages depend on factors such as the characteristics of the team and team members, their past histories and experience, the nature of their tasks, and the environmental demands and constraints (cf. McGrath, 1991). The TEAM model identities a total of ''nine stages'', seven central ones supplemented by two additional ones. The seven central stages begin with the formation of the team during its first meeting (forming) and moves through the members' initial, and sometimes unstable, exploration of the situation (storming), initial efforts toward accommodation and the formation and acceptance of roles (norming), performance leading toward occasional inefficient patterns of performance (performing-I), reevaluation and transition (reforming), refocusing of efforts to produce effective performance (performing-11), and completion of team assignments (conforming). The development of a team might be recycled from any of the final stages to an earlier stage if necessitated by a failure to achieve satisfactory performance or if adjustments to environmental demands are required or if problematic team interactions develop. The core stages of the model are preceded by a pre-forming stage that recognizes the forces from the environment (environmental demands and constraints) that call for, and contribute to, the establishment of the team; that is, forces external to the team (before it comes into existence) that cause the team to be formed. The last stage indicates that after the team has served its purpose, it will eventually be disbanded or de-formed. Here, individuals exit from the group (separately or simultaneously) and the team loses its identity and ceases to exist. The TEAM model also postulates the existence of ''two distinguishable activity tracks'' present throughout all the stages. The first of these tracks involves activities that are tied to the specific task(s) being performed. These activities include interactions of the team members with tools and machines, the technical aspects of the job (e.g., procedures, policies, etc.), and other task-related activities. The other track of activities is devoted to enhancing the quality of the interactions, interdependencies, relationships, affects, cooperation, and coordination of teams. The proponents of the model did not test its components or sequence of stages empirically but did confirm that the perceptions of team members concerning the performance processes of the team are perceived to include both team-centered and task-centered activities and that these perceptions seem to change over time as a result of team training.Hackman's Multilevel Perspective
Since its beginning, the study of group dynamics has caused disagreement between researchers, as some maintain the focus should be at the individual-level, and others maintain the focus should be at the group-level. The Multilevel Perspective is an integration of these analyses into one unified approach. It suggests that group development and success can be best understood by taking into account components found at all levels of analysis. Group behavior can be broken down into 3 levels of analysis: the individual level (micro), the group level (meso) and the organizational or societal level (macro). Hackman (2003) warns that the scientific community has a tendency towards what is termed, “explanatory reductionism” or the tendency to believe that the workings of all natures systems can be explained by the properties of the parts that make them up. In truth, highly complex systems, such as groups, can have components that cannot be explained by looking at the properties of say, the individual. In order to get a true understanding of group dynamics, it is important that one focuses on the big picture. Hackman (2003) emphasizes this point via an example of his previous research on the effectiveness of airline cockpit crews. The study looked at 300 crews from various airlines located in the U.S., Europe, and Asia (Hackman, 1993). The crews varied based on success, and the current barriers they were facing, which included things such as economic difficulty and other external stressors. At first, the analysis included structural features (design of the flying task and the crew itself) that were assessed using methods that included surveys, interviews, and reviews of training and procedure manuals. Once the data analysis began, a one-way analysis of variance showed that the airlines had nearly no variation on measures of crew structure and behavior. These results were quite contradictory to what had been expected, but fortunately, Hackman had also collected data on a number of individual and contextual factors, just in case. At the individual level, it appeared as though the airlines once again did not vary significantly, but at the organizational level the source of variance was found. It turned out that the variability in crew success was related to each crew's organizational context. A total of five key features were determinants of crew success: adequacy of material resources, clarity of performance objectives, recognition and reinforcement for excellent crew performance, availability of educational and technical assistance, and availability of informational resources. If the researchers had chosen to collect data at just one level of analysis (e.g. the group level) the study would not have produced significant results. When studying group development and dynamics, it is important that all levels of analysis are taken into consideration. While it may be tempting to focus mainly at the group level, important information may be present either one level up (the organizational level) or one level down (the individual level).Chaos Theory of Nonlinear Dynamics
Further challenges
Apart from the question of the validity of the research methods used and the generalizations that can be made based on the types of groups studied, there still remain some significant challenges in the study of group development. As some researchers have pointed out (e.g. Tuckman, 1965) group development models often provide only snapshots of groups at certain points of their history but do not fully describe the mechanisms of change, the "triggers" that lead to change or the amount of time that a group might remain in a stage. Furthermore, naturally occurring groups tend to be highly sensitive to outside influences and environmental contingencies, but few models account for these influences. Models of "small" group development are also related to those ofSee also
*Notes
References
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