![AJAX progress indicator](https://i0.wp.com/science-education-research.com/wp-content/plugins/TooltipProPlus/assets/css/images/ajax-loader.gif?w=840&ssl=1)
- radiation inducing mutations is like bombing
- radium mimics calcium
- random control trial
- randon control trials
- RCT
- R.C.T.
- randomisation
- rationalist
- raw data need to be pruned
- raw data should be carefully cooked
- reaction stopped by base-eating cannibals
- reader generalisation
- realist stage
- receptor on cell surface is like a magic key
- reductio ad absurdum
- reflexes can operate in peaceful republics
- reinforcement
- relationships are like cell division
- reliability
- Renaissance
- repertory grid
- replication
- research questions
- research schedule is like a split-brain
- response rate
- rhetoric of conclusions
- rhetorical experiments
- rhetorical research
- ribosome to mRNA is like a bead on a thread
- Room 5
- roots of science feed the soil
- Rorschach test is a fluoroscope into the psyche
- Rorschach test is like an X-ray picture
- Rosetta spacecraft might get utterly confused and make mistakes
- rostellum partially closes the mouth of the nectary like a trap placed in a run for game
- rote learning
- RSC
- Rutherford, Ernest