方法对比

	定量内容分析	描述性研究
领域	研究设计	研究设计
方法族	Process / pipeline	Process / pipeline
起源年份	1950s (Berelson 1952; Krippendorff 1980/2004)	Late 19th century; formalized in social/behavioral sciences ~1960s–1980s
提出者	Bernard Berelson; later systematised by Klaus Krippendorff	Francis Galton, Karl Pearson (early empirical tradition); formalized in social science by Fred Kerlinger
类型	Quantitative observational research method	Non-experimental quantitative research design
开创性文献	Krippendorff, K. (2004). Content Analysis: An Introduction to Its Methodology (2nd ed.). Sage. ISBN: 978-0761915454	Creswell, J. W. (2014). Research Design: Qualitative, Quantitative, and Mixed Methods Approaches (4th ed.). Sage. ISBN: 978-1452226101
别名	QCA, manifest content analysis, systematic content analysis, frequency-based content analysis	descriptive study, descriptive survey design, observational descriptive research, non-experimental descriptive research
相关	4	3
摘要	Quantitative content analysis is a systematic, replicable method for converting the manifest content of text, images, or other recorded communication into numerical data. By applying a pre-specified codebook to a defined corpus and counting or scaling the resulting categories, researchers obtain frequency distributions, proportions, and relationships that can be subjected to standard statistical tests. It is the dominant method for large-scale, objective analysis of media, documents, social media posts, policy texts, and similar materials.	Descriptive research is a non-experimental quantitative design that systematically documents the characteristics, frequencies, or distributions of variables in a defined population at a given point in time. It answers 'what is' questions — who, what, when, where, and how much — without manipulating variables or drawing causal conclusions. It is one of the most widely used research designs across the social, behavioral, health, and education sciences.