Scientific analysis
Systematising concepts, examining historical development and critically evaluating published evidence.
Science · Practice · Human Development
Happy Life Institute for Direct Change Science
We study how human change emerges, how it is measured and under which conditions it persists.
Scientific publicationsAbout the Institute
From practice to verifiable knowledge
The Institute develops research and analytical work focused on human change. It connects reviews of existing evidence with the development of questions, methods and programmes for future research.
Our focus includes behaviour, well-being, relationships, learning and professional development. Each approach is considered in light of the available data, its scope and its limitations.
Mission and public contribution
Understanding change and evaluating outcomes
The Institute's mission is to develop and disseminate verifiable knowledge about human change. Its research scope includes personal and professional development, well-being, relationships and learning.
Research design
Formulating testable questions, predefined procedures and indicators for evaluating outcomes.
Accessible knowledge
Publishing reports, scientific articles and methodological materials for researchers, practitioners and the public.
What we mean by “direct change”
The term describes a research focus on targeted approaches to specific change. The speed, effectiveness and durability of outcomes are questions for empirical investigation, rather than guaranteed properties.
Founder
Prof. Dr. Stoyana Natseva
Psychologist, researcher, educator and author. Founder of Happy Life Academy and Happy Life Institute for Direct Change Science.
Her research interests include human transformation, identity, autobiographical memory, well-being and the application of knowledge about change to personal and professional development.
Research programme
Questions that guide our work
The emergence of change
What mechanisms connect awareness, decisions and observable behaviour?
Durability of outcomes
How do outcomes persist after a programme ends, and what roles do environment and practice play?
Evaluating approaches
Which outcomes are supported by data, for which groups and under which conditions?
Measurement quality
How can we distinguish subjective experience, behavioural change and long-term effects?
Research cycle
Research question → literature analysis → research protocol → data collection and analysis → scientific review → publication and follow-up.
Organisation of our work
Responsibilities and scientific independence
The founder sets the strategic direction. Research projects require clearly identified responsibilities for methodology, analysis, editing and publication.
Editorial decisions on work by the founder or editorial members are assigned to an independent editor and reviewers without conflicts of interest. Names and affiliations of the research and editorial team will be published once participation is confirmed.
Guidelines and editorial principlesScientific programme
Three areas of work
01 / ANALYSIS
Reviews of Approaches to Human Development
History, concepts, practices, professional standards and evaluation of scientific evidence.
02 / RESEARCH
Measuring change
Developing research protocols to evaluate outcomes and follow them over time.
03 / APPLICATION
Methods and practical knowledge
Describing procedures and translating research findings into accessible materials for practitioners and the public.
Publication programme
Reviews of Approaches to Human Development
An analytical report series. Full texts and bibliographic records will be added after final editing and verification.
Neuro-Linguistic Programming
Concepts, practices, identity and scientific evidence. An international analytical review with a structured literature search.
Coaching: Development, Practices, Professional Standards and Scientific Evidence
An international analytical report with a focus on Bulgaria.
Ancestral Therapy: Concept, Scope and Evidence
An analysis of the term's usage, related practices and questions for future scientific investigation.
HAPPY LIFE INSTITUTE
SCIENTIFIC JOURNAL · IN PREPARATIONHuman Change
Working title
Scientific articles · Reviews · Methodology
SCIENTIFIC JOURNAL · IN PREPARATION
Human Change
& Development
Working titleScientific articles · Reviews · Methodology
Scientific journal
A space for research and scientific exchange
We are preparing a scientific journal on human change and development. Its planned scope includes original studies, analytical reviews and methodological publications.
Editing and peer review
The proposed editorial model includes preliminary screening and double-anonymous review by at least two independent specialists. Submissions will open once the editorial team is confirmed. Read the draft policy.
ISSN and DOI
Identifiers will be displayed once officially assigned. This site currently does not claim a registered ISSN or an active DOI registration service.
For authors
Author guidelines and the draft editorial policy are available for review. Manuscript submissions are not yet open.
Research principles
Transparency at every step
Clear methodology
Describing questions, sources and analytical methods so readers can assess the basis of the conclusions.
Evidence and limitations
Distinguishing established findings, preliminary observations and hypotheses.
Authorship and interests
Clearly identifying authors' contributions and their relationships with the methods and programmes discussed.
Responsible publishing
Traceable versions, corrections and accessible bibliographic information for scientific work.
Institute identity
Registered European trademark
Happy Life Institute for Direct Change Science
EUIPO · No. 019358572 · 30 September 2026
The emblem and name form a shared identity for the Institute and its scientific publications.
View the supplied certificate