def pract_text(trial):
    """
    input:  current practice trial # (int)
    output: practice instruction text (string) for given practice trial
    """

    intro = '\n\n Thank you for participating in this experiment! ' \
                    '\n\n In the experiment, you will pay attention to specific items on the screen.' \
                    '\n Then, we will test your memory for some of the items you have seen. ' \
                    '\n\n Press any key to continue... '

    # PRACTICE
    pract1 = ' You will see many images like the one below.' \
                    '\n You will need to pay special attention to either the FACE or SCENE. ' \
                    '\n\n\n\n\n\n\n\n\n\n\n\n\n\n Press any key to continue...'

    pract2 = ' Let\'s practice now! \n Look straight at the image and focus as hard as you can on the FACE. ' \
                    '\n\n\n\n\n\n\n\n\n\n\n\n\n\n When you can focus on the FACE well, press any key... '

    pract3 = ' Great job! ' \
                    '\n Now, focus as hard as you can on the SCENE. ' \
                    '\n\n\n\n\n\n\n\n\n\n\n\n\n\n When you can focus on the SCENE well, press any key... '

    pract4 = ' Next, you will see a cross and two images on the screen. ' \
                    '\n\n Keep your eyes staring straight at the cross, ' \
                    'but try to focus on the SCENE on the LEFT. ' \
                    '\n\n Only your attention should shift, not your eyes!' \
                    '\n You will not see the image perfectly clearly, just do your best, and feel free to ask questions!' \
                    '\n\n Press any key to begin. '

    pract5 = '\n\n\n\n\n\n\n\n\n\n\n\n\n\n When you are done, press any key to continue... '

    pract6 = '\n\n Great job! ' \
                    '\n This time, keeping your eyes at center, try and focus on the FACE on the RIGHT.' \
                    '\n\n Press any key to begin.' \

    pract7 = '\n\n\n\n\n\n\n\n\n\n\n\n\n\n When you are done, press any key to continue... '

    pract8 = ' Now, you will practice ' \
                    'attending to parts of images based on cue icons. ' \
                    '\n\n First, you\'ll see a pair of cue icons: ' \
                    '\n One arrow icon pointing left or right (< or >) ' \
                    ' and one image icon (face or scene): ' \
                    '\n\n\n\n\n\n After the cue icons, you will see several image pairs in a row. You\'ll attend to the SAME cued side and image part for EVERY pair.' \
                    ' Remember to keep your eyes fixated on the cross! ' \
                    '\n\n Press any key to begin.'

    pract9 = ' Great job, let\'s try it one more time!' \
                      '\n\n This time will be the same, but after each pair, a letter ("x" or "o") will appear on one side.' \
                      '\n When you see the letter, you should immediately press a button! ' \
                      '\n\n        If the "x" appears, press 1 ' \
                      '\n        If the "o" appears, press 3 ' \
                      '\n\n Remember to respond as quickly as you can!' \
                      '\n Press any key to begin.'

    pract10 = '\n\n Finally, you will practice reporting which images you remember. ' \
                    '\n You will use the following scale to rate individual images displayed on the screen: ' \
                    '\n\n        (1) I definitely have not seen the image before' \
                    '\n        (2) I probably have not seen the image before' \
                    '\n        (3) I probably have seen the image before' \
                    '\n        (4) I definitely have seen the image before' \
                    '\n\n You will need to respond quickly -- you\'ll have just 2 seconds!' \
                    '\n\n When you\'re ready to begin, press any key.'

    instructions = [intro, pract1, pract2, pract3, pract4, pract5, pract6, pract7, pract8, pract9, pract10]

    return(instructions[trial])