In startup companies, trained professionals may perform HR duties. In larger companies, an entire functional group is typically dedicated to the discipline, with staff specializing in various HR tasks and functional leadership engaging in strategic decision-making across the business. To train practitioners for the profession, institutions of higher education, professional associations, and companies have established programs of study dedicated explicitly to the duties of the function. Academic and practitioner organizations may produce field-specific publications. HR is also a field of research study that is popular within the fields of management and industrial/organizational psychology, with research articles appearing in a number of academic journals, including those mentioned later in this article.