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tasks/cpt.py

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+import streamlit as st
+import random
+
+def run_cpt():
+    st.subheader("🎯 Continuous Performance Task (CPT)")
+    st.write("Click the button ONLY if the current letter is **X**.")
+
+    if 'cpt_letters' not in st.session_state:
+        st.session_state.cpt_letters = random.choices(['A', 'B', 'X', 'C', 'D'], k=6)
+        st.session_state.cpt_index = 0
+        st.session_state.correct_hits = 0
+        st.session_state.false_hits = 0
+        st.session_state.clicked_this_round = False  # NEW
+
+    if st.session_state.cpt_index < len(st.session_state.cpt_letters):
+        current_letter = st.session_state.cpt_letters[st.session_state.cpt_index]
+        st.markdown(f"### Letter: `{current_letter}`")
+
+        col1, col2 = st.columns(2)
+        with col1:
+            if st.button("Click if 'X'"):
+                if not st.session_state.clicked_this_round:
+                    if current_letter == 'X':
+                        st.session_state.correct_hits += 1
+                    else:
+                        st.session_state.false_hits += 1
+                    st.session_state.clicked_this_round = True
+
+        with col2:
+            if st.button("Next Letter"):
+                st.session_state.cpt_index += 1
+                st.session_state.clicked_this_round = False  # reset for next round
+
+        st.write(f"Progress: {st.session_state.cpt_index + 1} / {len(st.session_state.cpt_letters)}")
+
+    else:
+        st.success("✅ Task Finished")
+        st.write(f"🎯 Correct Hits: {st.session_state.correct_hits}")
+        st.write(f"❌ False Hits: {st.session_state.false_hits}")
+        if st.button("Restart CPT Task"):
+            for key in ['cpt_letters', 'cpt_index', 'correct_hits', 'false_hits', 'clicked_this_round']:
+                del st.session_state[key]

tasks/symbol_match.py

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+import streamlit as st
+import random
+import time
+
+def run_symbol_match():
+    st.subheader("🧠 Symbol Match Task")
+
+    # Step 1: Define symbols and labels
+    symbols = ['@', '#', '$', '%', '&', '*']
+    label_map = {
+        '@': 'Symbol: @',
+        '#': 'Symbol: #',
+        '$': 'Symbol: $',
+        '%': 'Symbol: %',
+        '&': 'Symbol: &',
+        '*': 'Symbol: *'
+    }
+
+    if "phase" not in st.session_state:
+        st.session_state.phase = "show"
+        st.session_state.target_symbol = random.choice(symbols)
+        st.session_state.start_time = None
+        st.session_state.reaction_time = None
+
+    if st.session_state.phase == "show":
+        st.write("Memorize this symbol:")
+        st.markdown(f"<h1 style='text-align: center;'>{st.session_state.target_symbol}</h1>", unsafe_allow_html=True)
+        
+        if st.button("I saw it"):
+            st.session_state.phase = "match"
+            st.session_state.start_time = time.time()
+            st.rerun()
+
+    elif st.session_state.phase == "match":
+        st.write("Pick the symbol you just saw:")
+
+        # Build list of tuples: (label, actual value)
+        options = [(label_map[s], s) for s in symbols]
+        choice = st.radio("Options:", options, format_func=lambda x: x[0])
+
+        if st.button("Submit"):
+            end = time.time()
+            st.session_state.reaction_time = round(end - st.session_state.start_time, 2)
+            selected_symbol = choice[1]
+
+            if selected_symbol == st.session_state.target_symbol:
+                st.success(f"✅ Correct! Reaction time: {st.session_state.reaction_time}s")
+            else:
+                st.error(f"❌ Incorrect. It was {st.session_state.target_symbol}")
+            st.session_state.phase = "done"
+
+    elif st.session_state.phase == "done":
+        if st.button("Try Again"):
+            st.session_state.phase = "show"
+            st.session_state.target_symbol = random.choice(symbols)
+            st.session_state.start_time = None
+            st.session_state.reaction_time = None
+            st.rerun()

tasks/trail_making.py

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+import streamlit as st
+import time
+import random
+
+def run_trail_making():
+    st.subheader("🔗 Trail Making Task")
+    st.write("Click the numbers in ascending order as fast as you can!")
+
+    if 'trail_sequence' not in st.session_state:
+        st.session_state.trail_sequence = random.sample(range(1, 6), 5)
+        st.session_state.clicked_numbers = []
+        st.session_state.trail_start_time = time.time()
+
+    cols = st.columns(5)
+    for idx, num in enumerate(st.session_state.trail_sequence):
+        if cols[idx].button(str(num), key=f"btn_{num}"):
+            if num not in st.session_state.clicked_numbers:
+                st.session_state.clicked_numbers.append(num)
+
+    if len(st.session_state.clicked_numbers) == 5:
+        if st.session_state.clicked_numbers == sorted(st.session_state.trail_sequence):
+            rt = round(time.time() - st.session_state.trail_start_time, 2)
+            st.success(f"✅ Correct order! Time taken: {rt} seconds")
+        else:
+            st.error("❌ Incorrect order. Try again.")
+        if st.button("Restart"):
+            for key in ['trail_sequence', 'clicked_numbers', 'trail_start_time']:
+                del st.session_state[key]