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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Word fragment completion task as used in the study of Weldon (1991).
Stimulus list: "word_fragment_completion_stimuluslist.csv"!
Weldon, M. S. (1991). Mechanisms underlying priming on
perceptual tests. Journal of Experimental Psychology: Learning, Memory, and
Cognition, 17, 526-541.
"""
import csv
from expyriment import design, control, stimuli, io, misc
control.set_develop_mode(True)
#### read in wordlist file and make design
exp = design.Experiment("word fragment completion test")
block = design.Block()
with open("word_fragment_completion_stimuluslist.csv", "rb") as f:
reader = csv.reader(f)
for row in reader:
trial = design.Trial()
trial.set_factor("word", row[0].strip())
trial.set_factor("fragment", row[1].strip())
block.add_trial(trial)
block.shuffle_trials()
exp.add_block(block)
exp.add_data_variable_names(["word", "fragment", "RT", "RT2", "answer"])
control.initialize(exp)
#prepare some stimuli
fixcross = stimuli.FixCross(line_width=1)
fixcross.preload()
blank = stimuli.BlankScreen()
blank.preload()
txt_input = io.TextInput("")
control.start(exp)
#run experiment
for trial in exp.blocks[0].trials:
#present blank inter-trial-screen and prepare stimulus
blank.present()
fragment = ""
for c in trial.get_factor("fragment").upper():
fragment += c + " "
target = stimuli.TextLine(fragment.strip())
target.preload()
exp.clock.wait(1000)
#present fixcross
fixcross.present()
exp.clock.wait(500)
#present target
target.present()
key, rt = exp.keyboard.wait(misc.constants.K_SPACE)
#ask response
exp.clock.reset_stopwatch()
answer = txt_input.get()
rt2 = exp.clock.stopwatch_time
#process answer and save data
blank.present()
answer = answer.strip()
exp.data.add([trial.get_factor("word"), trial.get_factor("fragment"),
rt, rt2, answer])
target.unload()
control.end()
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