Glossary

The Big Five personality model (also called OCEAN or Five-Factor Model) is the most empirically validated framework for measuring personality, comprising five broad trait dimensions.

Classical Test Theory (CTT) is a psychometric framework that models an observed test score as the sum of a person's true score and random measurement error.

Confirmatory Factor Analysis (CFA) is a statistical technique that tests whether observed variables (e.g., questionnaire items) conform to a hypothesized underlying factor structure.

Construct validity is the degree to which a test or assessment accurately measures the theoretical construct (such as intelligence, personality, or motivation) it purports to measure.

A content model is a formal definition of the content types, their fields, relationships, and constraints within a content management system or website.

A context window is the maximum number of tokens (words and word fragments) that a large language model can process in a single conversation, encompassing both input and output.

E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) is a framework from Google's Search Quality Rater Guidelines used to evaluate the quality and credibility of web content.

Fail2ban is an intrusion prevention tool that monitors system log files for patterns of malicious activity and automatically bans offending IP addresses using firewall rules.

FastCGI cache is an Nginx feature that stores the complete HTML output of PHP requests as static files, serving subsequent requests directly from cache without invoking PHP.

IndexNow is an open protocol that allows websites to notify participating search engines (Bing, Yandex, others) immediately when content is created, updated, or deleted.

Internal linking is the practice of connecting pages within the same website through hyperlinks, distributing page authority and establishing topical relationships for search engines.

Item Response Theory (IRT) is a family of statistical models that describe the relationship between a person's latent trait level and their probability of responding correctly to a test item.

An AI knowledge base is a structured repository of project context, decisions, conventions, and domain knowledge that persists across LLM conversations, enabling continuity and informed assistance.

A LEMP stack is a software bundle of Linux, Nginx (Engine-X), MariaDB (or MySQL), and PHP used to serve dynamic web applications.

O*NET (Occupational Information Network) is a comprehensive database maintained by the US Department of Labor that describes occupations in terms of skills, abilities, knowledge, work activities, and interests.

OPcache is PHP's built-in opcode cache that stores pre-compiled script bytecode in shared memory, eliminating the need to parse and compile PHP files on every request.

PHP-FPM (FastCGI Process Manager) is a PHP implementation that manages a pool of worker processes to handle PHP requests from a web server like Nginx.

A psychometric assessment is a standardized measurement instrument designed to quantify psychological attributes such as personality traits, cognitive abilities, interests, or values.

Redis object cache is an in-memory data store used by WordPress to cache database query results, reducing the number of MySQL queries needed to generate each page.

Specification-driven development is an approach where detailed written specifications guide implementation, particularly effective when using AI coding assistants that perform better with explicit requirements than vague instructions.

An SSL/TLS certificate is a digital credential that enables encrypted HTTPS connections between a web browser and server, verifying the server's identity and protecting data in transit.

A static site generator (SSG) is a tool that builds a complete website as pre-rendered HTML files at compile time, rather than generating pages dynamically on each server request.

Structural Equation Modeling (SEM) is a multivariate statistical framework that tests hypothesized relationships among observed and latent variables simultaneously, combining factor analysis with path analysis.

Structured data is machine-readable code (typically JSON-LD format) embedded in web pages that describes content to search engines using the Schema.org vocabulary.

A Virtual Private Server (VPS) is a virtualized server environment that provides dedicated CPU, RAM, and storage resources within a shared physical machine.