diff --git a/plugins/jspsych-categorize-animation.js b/plugins/jspsych-categorize-animation.js
index 4bdb43db17..ee2718b202 100644
--- a/plugins/jspsych-categorize-animation.js
+++ b/plugins/jspsych-categorize-animation.js
@@ -164,10 +164,10 @@
                         "key_press": e.which
                     };
                     block.writeData($.extend({}, trial_data, trial.data));
-                    $(document).unbind('keyup', resp_func);
+                    $(document).unbind('keydown', resp_func);
                 }
             };
-            $(document).keyup(resp_func);
+            $(document).keydown(resp_func);
 
             function endTrial() {
                 clearInterval(animate_interval); // stop animation!
diff --git a/plugins/jspsych-categorize.js b/plugins/jspsych-categorize.js
index e7498e23eb..5a4fa6f989 100644
--- a/plugins/jspsych-categorize.js
+++ b/plugins/jspsych-categorize.js
@@ -133,14 +133,14 @@
                         block.writeData($.extend({}, trial_data, trial.data));
 
                         // clear function
-                        $(document).unbind('keyup', resp_func);
+                        $(document).unbind('keydown', resp_func);
                         display_element.html('');
                         plugin.trial(display_element, block, trial, part + 1);
                     }
                 };
 
                 // add event listener
-                $(document).keyup(resp_func);
+                $(document).keydown(resp_func);
                 break;
 
             case 2:
diff --git a/plugins/jspsych-html.js b/plugins/jspsych-html.js
index 2b080d36c4..cb5aab60d5 100644
--- a/plugins/jspsych-html.js
+++ b/plugins/jspsych-html.js
@@ -62,7 +62,7 @@ Example Usage:
                 var t0 = (new Date()).getTime();
                 var finish = function() {
                     if (trial.check_fn && !trial.check_fn(display_element)) return;
-                    if (trial.cont_key) $(document).unbind('keyup', key_listener);
+                    if (trial.cont_key) $(document).unbind('keydown', key_listener);
                     block.writeData({
                         trial_type: "html",
                         trial_index: block.trial_idx,
@@ -88,7 +88,7 @@ Example Usage:
                     var key_listener = function(e) {
                         if (e.which == trial.cont_key) finish();
                     };
-                    $(document).keyup(key_listener);
+                    $(document).keydown(key_listener);
                 }
             });
         };
diff --git a/plugins/jspsych-same-different.js b/plugins/jspsych-same-different.js
index 6183d3c421..e510ecdea8 100644
--- a/plugins/jspsych-same-different.js
+++ b/plugins/jspsych-same-different.js
@@ -137,7 +137,7 @@
                             "key_press": e.which
                         };
                         block.data[block.trial_idx] = $.extend({}, trial_data, trial.data);
-                        $(document).unbind('keyup', resp_func);
+                        $(document).unbind('keydown', resp_func);
 
                         display_element.html('');
                         if(trial.timing_post_trial > 0) {
@@ -149,7 +149,7 @@
                         }
                     }
                 };
-                $(document).keyup(resp_func);
+                $(document).keydown(resp_func);
                 break;
             }
         };
diff --git a/plugins/jspsych-single-stim.js b/plugins/jspsych-single-stim.js
index 59ccea59ba..432313accb 100644
--- a/plugins/jspsych-single-stim.js
+++ b/plugins/jspsych-single-stim.js
@@ -94,7 +94,7 @@
                 };
 
                 block.writeData($.extend({}, trial_data, trial.data));
-                $(document).unbind('keyup', resp_func);
+                $(document).unbind('keydown', resp_func);
                 display_element.html('');
                 if (trial.timing_post_trial > 0) {
                     setTimeout(function() {
@@ -133,7 +133,7 @@
                 }
             };
 
-            $(document).keyup(resp_func);
+            $(document).keydown(resp_func);
 
             // hide image if timing is set
             if (trial.timing_stim > 0) {
diff --git a/plugins/jspsych-xab.js b/plugins/jspsych-xab.js
index 68be173829..1110b20a7d 100644
--- a/plugins/jspsych-xab.js
+++ b/plugins/jspsych-xab.js
@@ -188,7 +188,7 @@
                             "key_press": e.which
                         };
                         block.writeData($.extend({}, trial_data, trial.data));
-                        $(document).unbind('keyup', resp_func); // remove response function from keys
+                        $(document).unbind('keydown', resp_func); // remove response function from keys
                         display_element.html(''); // remove all
                         xab_trial_complete = true;
                         // move on to the next trial after timing_post_trial milliseconds
@@ -201,7 +201,7 @@
                         }
                     }
                 };
-                $(document).keyup(resp_func);
+                $(document).keydown(resp_func);
                 break;
             }
         };