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Across 3. A substance that has no effect apart from a person's belief in it. 5. Statement that attempts to explain why things are they way they are. 8. (hyphenated word) A study in which neither participants nor experimenters are aware of who has received the treatment. 9. In an experiment, this group does not receive the treatment. 11. "Looking within." 13. This person founded a field of psychology known as structuralism. 14. This type of psychologist studies the changes that occur throughout the lifespan. 15. For the findings of a study to be confirmed, it must be repeated and give the same results. 17. This perspective addresses the impact of ethnicity, gender, culture, socioeconomic status on behavior and mental processes. 21. Subgroups in the population are represented proportionally in the sample. 22. Founder of the school of behaviorism 24. This type of psychologist treats people with adjustment problems rather than serious psychological disorders. 25. Standards for proper and responsible behavior. 26. Private mental processes 27. In this type of correlation, as one goes up, the other goes down.

Down 1. In this type of correlation, as one goes up, so does the other. 2. In this type of observation, the researcher studies people or animals in their natural habitats without them knowing it. 3. This approach to psychology stresses the influence of unconscious forces on human behavior. 4. This is the variable (factor) that researchers manipulate so they can determine its effect. 6. If you are rewarded for performing an action, you are more likely to perform that action again in the future. 7. People are asked to respond to a series of questions about a particular subject. 10. An educated guess. 12. This perspective on psychology stresses the importance of self-awareness and the capacity to make choices. 16. Researchers select a group of participants and then observe those participants over a period of time. 18. The best social studies teacher I have had so far. 19. This man (last name) was concerned with how mental processes help organisms adapt to their environment (functionalism). 20. This perspective on psychology emphasizes how people process information (thoughts, perceptions). 23. People give this type of consent when agreeing to participate in research.