Final answer:
Self-help groups typically operate without a formal leader, instead using informal consensus to make decisions. Larger groups have more structured leadership, while small groups like self-help circles rely on informal, non-hierarchical methods.
Step-by-step explanation:
It is true that self-help groups tend to have an informal or no definitive leader. Such groups are often described as acephalous, which is a term used to denote the absence of a formal leader. Self-help groups function similar to the way friends make decisions collectively, discussing and reaching a consensus informally without a designated leader. In contrast to small primary groups, larger secondary groups typically have more overt leadership with defined roles and a clear chain of command, important for coordination and effective functioning in complex scenarios.
Despite the lack of formal leadership, self-help and other small groups maintain order and cohesion through shared goals and the power of informal leadership, characterized by persuasion and social influence. This form of structure enables the group to operate cooperatively and to resolve collective action problems without needing rigid hierarchy.
In summary, while larger groups like the military or a corporate workplace might have a formal leadership structure, small primary groups and self-help circles usually rely on informal leadership, drawing strength from personal relationships and consensual decision-making processes.