Escribe the biological theories which may explain schizophrenia.

please i would prefare you use only British text books and journal for this essays. proper referencing the Author name, year and page number.

the essay should consist of symptoms, types of schizophrenia, genetics, biochemistry and psychological stresss. please deal with this concepts.

Please avoid plagiarism, express a line of reasonable argument and give references.

please dont just copy the text and transfer to the essay. i need this essay to consist of your own words

please avoid using any ext from the internet or multi-media resources.