Cesare Lombroso, often considered the father of modern criminology, proposed the theory of atavism. He argued that criminals were evolutionary throwbacks who possessed specific physical or biological traits that predisposed them to criminal activity. His work shifted the focus of criminology from free will to biological determinism, suggesting that criminal behavior was an inherent characteristic rather than a purely social or environmental outcome.

Value neutrality, a concept famously associated with Max Weber, requires researchers to remain impartial and objective. It dictates that sociologists should strive to prevent their personal biases, beliefs, and values from influencing the collection, analysis, and interpretation of data. This practice is essential for maintaining scientific integrity and ensuring that sociological findings are based on empirical evidence rather than the researcher's subjective opinions.

Émile Durkheim published 'The Rules of Sociological Method' in 1895. This text is crucial to the discipline as it outlines the methodology for sociology as a distinct science. Durkheim argued that social facts should be treated as 'things' and studied objectively, establishing a framework for empirical sociological research that remains influential in the social sciences today.

The concept that 'change is the only constant' is a philosophical observation often attributed to Heraclitus. In scientific terms, this relates to the idea that the laws of physics and the process of entropy are universal and persistent. While specific variables within the universe are constantly in flux, the underlying principle that change itself is a permanent, unchanging feature of reality remains a fundamental axiom in both philosophy and science.

Sociological inquiry is characterized by a dynamic, cyclical relationship between theory and research. Theories provide frameworks for generating research questions, while empirical research provides data that either supports, refines, or refutes those theories. This iterative process ensures that sociological knowledge remains grounded in evidence while continuing to evolve and expand through theoretical development.

The term 'soft sciences' is often used pejoratively to imply that social sciences lack the empirical rigor or predictive power of 'hard' natural sciences like physics or chemistry, though this distinction is widely debated and criticized by sociologists.

Empirical evidence is information acquired by observation or experimentation. This type of evidence is recorded and analyzed by scientists and is central to the scientific method, as it allows researchers to verify claims about the world through direct sensory experience or measurement rather than through logic or intuition alone.

Sociologists utilize various research methods to study human behavior in diverse settings. By observing individuals where they live, work, and engage in leisure activities, researchers can gain a comprehensive understanding of social interactions, cultural norms, and institutional dynamics within their natural contexts.

The scientific method provides a systematic framework for sociologists to collect, interpret, and analyze empirical data. This ensures that findings are based on evidence rather than intuition, allowing for objective conclusions about social phenomena.

Unlike physical objects in natural sciences, human beings assign subjective meanings to their actions. Because human behavior is deeply embedded in cultural contexts, personal experiences, and social interactions, it is highly variable and complex. This 'meaningful' nature of social life means that sociologists must often use interpretive methods alongside quantitative ones to capture the nuances of human experience, which cannot be reduced to the simple cause-and-effect relationships often found in the natural sciences.