Introduction-Invasive means naturally entering the body by cutting or inserting an instrument. In this case we are talking about the need to use invasive techniques to advance further and faster in the world of psychological studies. Studies have proven that the use of invasive techniques has changed the world of psychology because it gives researchers and experimenters a broader view of the brain. Many hospitals around the world still use invasive techniques, mainly known as open surgery, because many people can recover from them. operation or surgical intervention. In fact, small incisions are made and not just one large one. It is still quite common to use invasive techniques because they are easier to remove any type of disease like cancerous tumors. Invasive techniques (open surgery) pose many ethical issues as people often debate the need to take the field further. world of psychology using invasive techniques or why not just start using non-invasive techniques. This is believed because it is still barbaric to cut up human brains simply to discover and learn about the human brain. However, using non-invasive techniques such as:• X-ray.• CT.• PET.• MRI and FMRI.• Electro recording (EEG).• SPECT.• SQUID. These techniques carry many harmful risks of getting sick due to the radiation that comes out of these machines, the radiation might not affect you at that time, but in 10 to 20 years, the radiation that would come out if these machines could cause cancerous tumors. It is considered to give you a broader and broader view of the human brain. The cost of using non-invasive techniques is much higher than that of invasive techniques (open surgery). Since non-invasive techniques are in the middle of paper, they contain molecular material to monitor bodily functions and responses, assess drug levels, and track disease processes without subjecting patients to unnecessary discomfort and risk . Bibliography: www.st-andrews.ac.uk “University of St Andrews – Scotland's first university, founded in 1413.” St-Andrews.ac.uk, 2014. Web. February 17, 2014. .en.wikipedia.org “Main page”. Wikipedia, 2014. Web. February 17, 2014. .en.m.wikibooks.org “Wikibooks”. Fr.m.wikibooks.org, 2014. Web. February 17, 2014. .lib.bioinfo.pl2014. Internet. February 17, 2014. www.colombia.edu2014. Internet. February 17, 2014.www.class.uidaho.edu “College of Letters, Arts and Social Sciences.” Class.uidaho.edu, 2014. Web. February 17 2014. .