diff --git a/.changeset/loud-brooms-rush.md b/.changeset/loud-brooms-rush.md
new file mode 100644
index 0000000000..82f8fe48f0
--- /dev/null
+++ b/.changeset/loud-brooms-rush.md
@@ -0,0 +1,5 @@
+---
+"jspsych": patch
+---
+
+Fix bug that multiple jspsych instances cannot be run simultaneously
diff --git a/packages/jspsych/src/JsPsych.ts b/packages/jspsych/src/JsPsych.ts
index b1395318dd..54174fa51d 100644
--- a/packages/jspsych/src/JsPsych.ts
+++ b/packages/jspsych/src/JsPsych.ts
@@ -450,7 +450,7 @@ export class JsPsych {
     options.display_element.innerHTML =
       '<div class="jspsych-content-wrapper"><div id="jspsych-content"></div></div>';
     this.DOM_container = options.display_element;
-    this.DOM_target = document.querySelector("#jspsych-content");
+    this.DOM_target = this.DOM_container.querySelector("#jspsych-content");
 
     // set experiment_width if not null
     if (options.experiment_width !== null) {